Holosun EPS & EPS Carry - Enclosed 407K/507K

[SmokeJumper]

Finally scored an EPS Carry, hopefully this one has no issues, out of the box seems fine. If this has been asked or recommended already, my apologies ahead of time. Looking at this for G43X MOS. Is it recommended to use a plate like DPP or CH Precision for preferred mounting vs sending to CH Precision for the MOS package to direct mount to a G43X slide after they machine off the two rear nubs on the slide?
https://chpws.com/product/glock-43x-48-for-holosun-407k-507k-slide-milling-upgrade/

Thanks in advance for the info

Did some further research...A coworker had CH Precision do the 43X MOS mod with cerakote, EPS Carry mounted flush/level got his zero without issue. He had to trim the right screw (on ejection side of gun). The finish is rough to say the least, I think a whole slide refinish in DLC or Nitride would have been better. Recently saw, read about, and discovered some who have used Jager Werks without issue. Think I will send the slide to them for direct mount of EPS Carry. Thanks to all for the input, this has been very informative on the smaller units.

[Clusterfrack]

Does anyone know the McMaster Carr screw that replaces the EPS battery tray screw?

[GJM]

Does anyone know the McMaster Carr screw that replaces the EPS battery tray screw?

Interested as well, because every time I change the battery on a Holosun, I worry about dropping and losing that screw.

[Clusterfrack]

The 509 Battery tray screw is:
McMaster Carr 91294A002
Black-Oxide Alloy Steel 0.050” Hex Drive Flat Head Screw, 90 Degree Countersink Angle, M2 x 0.40

My notes have a question mark about this screw for the EPS:
M2.5x0.45x5mm or 6mm?
https://www.mcmaster.com/91698A240/

Can anyone confirm or reject this?

[crosseyedshooter]

The 509 Battery tray screw is:
McMaster Carr 91294A002
Black-Oxide Alloy Steel 0.050” Hex Drive Flat Head Screw, 90 Degree Countersink Angle, M2 x 0.40

My notes have a question mark about this screw for the EPS:
M2.5x0.45x5mm or 6mm?
https://www.mcmaster.com/91698A240/

Can anyone confirm or reject this?

I pulled out the tray screw from an EPS Carry and measured the overall length at 4.3mm so it's probably M2.5x4mm. I don't have anything to measure threads that small but it's definitely bigger than the M2x4mm screw from the 507k I have. One nice thing about the Holosun screws is the screw head slot fits the windage/elevation adjustment tool. If you go to an aftermarket screw, it'll probably be a 1.5mm hex or T8 Torx drive.

Even though the Holosun screws seem to be made of pretty soft metal, they've been good about sending out free replacements upon request (info@holosun.com).

[paperman]

Finally got my 19 slide back to complete the set. Glock steel sights 7.3mm rear.

[RJ]

Finally found some change back of the couch to replace my sold 407k with an EPS Carry Red MRS. 2023 was kinda sorta gonna be my year of the irons, but circumstances have changed and I want to have a dot again. Seems like errbody is at the $399 price point unless I miss something.

Generally are these optics shaking out ok? I assume so by the lack of persistent issues (ok, some) being reported here and elsewhere. Any reason not to order one, lemme know.

[1Rangemaster]

Finally found some change back of the couch to replace my sold 407k with an EPS Carry Red MRS. 2023 was kinda sorta gonna be my year of the irons, but circumstances have changed and I want to have a dot again. Seems like errbody is at the $399 price point unless I miss something.

Generally are these optics shaking out ok? I assume so by the lack of persistent issues (ok, some) being reported here and elsewhere. Any reason not to order one, lemme know.

I’ve had a green EPS Carry on a G43X since last summer with no issues over a few hundred rounds. There has been a red full size EPS on a Glock at work as a T&E sample for several months and 2,000+ rounds-no problems. So, that’s two examples, FWIW.
I lean a bit toward the crossbar mount on Aimpoint, 509T and Steiner, but the EPS sights are performing just fine. I carried the 43X combo last week with no worries.

[RJ]

I’ve had a green EPS Carry on a G43X since last summer with no issues over a few hundred rounds. There has been a red full size EPS on a Glock at work as a T&E sample for several months and 2,000+ rounds-no problems. So, that’s two examples, FWIW.
I lean a bit toward the crossbar mount on Aimpoint, 509T and Steiner, but the EPS sights are performing just fine. I carried the 43X combo last week with no worries.

Great input, thank you. Ordered last night.

[psalms144.1]

Great input, thank you. Ordered last night.Rich - where did you end up sourcing the EPS-C?

[RJ]

Rich - where did you end up sourcing the EPS-C?

https://midwestoptics.net/

Tip o' the ballcap to a Supporting Member here for the suggestion. They received my order Sunday night and I got a tracking number today. Might want to look at the "send me an email price" link on their web site...

[maximus83]

Sorry if I missed this somewhere else, couldn't find it.

Which Sig p365 XL Xray sights match up well with the EPS Carry for a low-witness (say, lower 1/4 or 1/5 of Window)?

I need to replace some suppressor height sights that came with a Sig P365 XL, not sure whether to get the #6 front and #6 rear, or #8 and #8, or some other combo.

[HeavyDuty]

I’m ashamed to say I haven’t figured out a new front sight height for my XL. Mine uses the notch on the EPS Carry for backup.

[RJ]

Re front sight height with EPS Carry on a P365XL, I have an EPS Carry MRS inbound I plan to put on my spare XL slide, so I'll need to work this out soon myself. Be interested in what you guys end up with.

A few months ago I did a thought experiment on this, but with a 407k. Obviously the deck height of the optic "ears" at the rear of the optic body are going to be a bit taller than the EPS Carry. For what it's worth though, below is the math I ended up using. I'll do the same thing when my EPS gets here and update this, but perhaps there's something here someone can use:


Some measurements of the two slides I have. Slide 1 is a P365XL slide I bought as part of an X-change kit, to use with my Macro grip for USPSA CO. It has a 407k on it. Slide 2 is the slide that came with my P365X. It has the original irons (plate version), front and rear. The sights on my slides are listed as "XRAY 3" on the Box. My P365X S/N is 66B71xxxx, born on date October 2021. I bought the X-Change kit late last year, before they were discontinued.

Slide 1 (P365XL w optic)

Front Sight height, top, to top of slide: 0.173"
Rear "Sight" height, slide to bottom of vestigial notch on Holosun 407k: 0.185"

Slide 2 (P365X w XRAY 3s)

Front Sight height, top, to top of slide: 0.172"
Rear Sight height, slide to bottom of XRAY3 sight notch: 0.100"

So the rear of the XL slide with the optic is kicked up 0.085" over the XRAY 3, from the optic body. With a sight radius of 5.5" (P365XL), 0.085" in elevation error would translate to a theoretical elevation error of 3.9", high, at 7 yards. In other words the XL "irons" I have should shoot high, by almost half my 8" circle "nipple to nipple" chest target zone, at typical self-defense distance of 21', if my dot fails.

Preserving the rear/front delta of the X slide irons for the optic slide, you'd have to have a front sight taller than the optic, by the same amount the irons are. You can figure out how much as follows:

How tall is the front iron over the rear iron? 0.172 - 0.100 = 0.072.

Add that delta, to the optic rear body height, to determine equivalent front sight height needed with a 407k: 0.185 + 0.072 = 0.257"

So the math predicts the "correct" front sight height for a P365XL slide with a Holosun 407k is 0.257".

My guess is that since the EPS Carry deck height is a bit less than the 407k, the front sight height needed is going to be a bit less, too, i.e. by the difference in the deck height of the two optics (407k v. EPS Carry).

At least from Sig, these are the options available. #5 is as tall as they come, so if that isn't tall enough, looks like you'd need to go aftermarket.

105937

I'd be curious if anyone knows the dimensions of those new "tall" sights Sig has on the new plate-less slides they are coming with these days.

https://www.sigsauer.com/xray3-sight-set-day-night-super-tall.html

EDIT Found an answer buried in a customer CS question from 2020:

105938

[HeavyDuty]

I have a low tech method for calculating front sight heights on RDS pistols.

1) sight in pistol RDS
2) using a digital micrometer, determine front sight height to cowitness with dot

I know this is totally the wrong way, but hey - it’s been working so far.

[masternave]

I'm going to try to follow stomridertx and try this amazon DPP plate… I'll try and take some pictures of the MOS gun with the stock glock sights just for comparison on how low this will hopefully sit.

[stomridertx]

I'm going to try to follow stomridertx and try this amazon DPP plate… I'll try and take some pictures of the MOS gun with the stock glock sights just for comparison on how low this will hopefully sit.
I'm hoping a high round count shooter will run a gun with one hard and report back. Ideally Aaron Cowan, but it would be nice for the initial positive impression of the plates to be vetted for real. I've had zero issues and it's my favorite mount right now. It does kind of suck that China has made another inroad in milling titanium cheaper than we can (and doing it with precision), but that compromise is already made with the actual optic.

[RJ]

Installed the new EPS Carry MRS on my spare XL slide today. I skipped the RMSc plate and used McMaster Carr T10 M3-0.5x10mm Torx Plus Flat head, as recommended up thread.

Adding the new deck height measurement as Slide 3:

Slide 1 (P365XL w 407k)

Front Sight height, top, to top of slide: 0.173"
Rear "Sight" height, slide to bottom of vestigial notch on Holosun 407k: 0.185"

Slide 2 (P365X w XRAY 3s)

Front Sight height, top, to top of slide: 0.172"
Rear Sight height, slide to bottom of XRAY3 sight notch: 0.100"

Slide 3 (P365XL w EPS Carry MRS)

Front Sight height, top, to top of slide: 0.173"
Rear "Sight" height, slide to bottom of vestigial notch on Holosun EPS Carry: 0.150"

Again, preserving the rear/front delta of the X slide irons for the EPS Carry:

How tall is the front iron over the rear iron? 0.172 - 0.100 = 0.072.

Add that delta, to the optic rear body height, to determine equivalent front sight height needed with a EPS Carry: 0.150 + 0.072 = 0.222"

EDIT: I'm not sure about that table I posted; I just measured a take off XRAY3 at 0.165". It's stamped "6" and came off my P365XL. I'll have to go and check on that.

EDIT2: Ok, I think I was referencing the wrong point for 0.230/0.165. Here's a drawing I found to show where 0.230" can be measured; it's down to inside the dovetail, apparently. Learn something new every day. Author of the drawing is user "Willard", it dates from about 2019.

105964

[RJ]

Argh, forgot the glamour photo.

105967

[masternave]

Seems like folks say that they either last forever or bite the dust fast.

Do we have a rough idea of what things you should test on a new carry optic to "find the bad QC" problems before committing to it as an EDC?

Things I've seen suggested in the thread:

- submersing in water overnight
- shooting 1-2k rounds mounted

Anything else that the new Holosun owner should be looking for to find the failures fast?

[rawkguitarist]

I'm hoping a high round count shooter will run a gun with one hard and report back. Ideally Aaron Cowan, but it would be nice for the initial positive impression of the plates to be vetted for real. I've had zero issues and it's my favorite mount right now. It does kind of suck that China has made another inroad in milling titanium cheaper than we can (and doing it with precision), but that compromise is already made with the actual optic.

Yeah, I'm not going to claim my EPS doesn't have any issues until I get at least 10k rounds on it. I think I've got about 2k with mine so far. No offense to those that state "its going strong after 300 rounds now".

But I do love it... In my opinion it was a leap forward in carry optics.

One things for sure... Aaron Cowan beat the phuc out of one and the glass didn't even crack.

[rawkguitarist]

I have a low tech method for calculating front sight heights on RDS pistols.

1) sight in pistol RDS
2) using a digital micrometer, determine front sight height to cowitness with dot

I know this is totally the wrong way, but hey - it’s been working so far.

Here's what I did... I measured to the top of the deck after the sight was installed. Then added .03 or .04 over it for the front sight and chose the proper hight rear sight to match (probably .02 over that). it was such an unscientific process, I don't even remember what the measurements were. The variety from Dawson and Ameriglo, you can get sights essentially perfectly customized.

I wanted my backups to be just good enough to use AS BACKUP. Right? Only one of my pistols I wish the sights were higher and it was because I used a front sight I had on hand. The rest of my pistols the backups are perfect.

[vandal]

Anyone know if the internals on the EPS and EPS Carry are the same? Just wondering if my EPS would lose zero with a hard drop like my EPS Carry did, or if the internals are beefed up due to space allowed by the wider body.

FWIW after re-zeroing the EPS Carry it has held that zero for about 400 rounds.

[RJ]

Anyone know if the internals on the EPS and EPS Carry are the same? Just wondering if my EPS would lose zero with a hard drop like my EPS Carry did, or if the internals are beefed up due to space allowed by the wider body.

FWIW after re-zeroing the EPS Carry it has held that zero for about 400 rounds.

My guess would be the chip set and EPROM that comes with each would be identical. What might be different would be parameter settings for the sights, for example if the charge current on an EPS vs. EPS Carry solar cell might be different due to the size of the cells.

But yeah, in simple terms I’d expect them to be essentially identical.

EDIT apologies I missed you were referring to physical characteristics.

[stomridertx]

Yeah, I'm not going to claim my EPS doesn't have any issues until I get at least 10k rounds on it. I think I've got about 2k with mine so far. No offense to those that state "its going strong after 300 rounds now".

But I do love it... In my opinion it was a leap forward in carry optics.

One things for sure... Aaron Cowan beat the phuc out of one and the glass didn't even crack.
I've become confident in the EPS, at least my sample of one. What I want to see put through the ringer is the DPP Titanium MOS plate.

[masternave]

While scouring this thread, comparing micromeasurements, and trying to ascertain the lowest possible BUIS… I noticed that Heinie has a new MOS (low) set. I've been shooting Heinie Straight-8s for… years. The dimensions looked right…

106302

Oh yeah. The back notch is nearly flush with the deck of my EPS on the DPP plate.

106303

Now I have a sight picture to which I've become very accustomed. I know the tritium is arguably whatever, I'm just used to having it and if I have to take the Holosun off… I still have a Glock 19 that I'm used to carrying. Eyeballing it, I can't tell if it's even taller than the Slant-ledge on my 19.4.

106304

Very pleased indeed.

[GJM]

While scouring this thread, comparing micromeasurements, and trying to ascertain the lowest possible BUIS… I noticed that Heinie has a new MOS (low) set. I've been shooting Heinie Straight-8s for… years. The dimensions looked right…

106302

Oh yeah. The back notch is nearly flush with the deck of my EPS on the DPP plate.

106303

Now I have a sight picture to which I've become very accustomed. I know the tritium is arguably whatever, I'm just used to having it and if I have to take the Holosun off… I still have a Glock 19 that I'm used to carrying. Eyeballing it, I can't tell if it's even taller than the Slant-ledge on my 19.4.

106304

Very pleased indeed.

How rounded/shirt friendly is this rear sight?

[Tokarev]

While scouring this thread, comparing micromeasurements, and trying to ascertain the lowest possible BUIS… I noticed that Heinie has a new MOS (low) set. I've been shooting Heinie Straight-8s for… years. The dimensions looked right…

106302

Oh yeah. The back notch is nearly flush with the deck of my EPS on the DPP plate.

106303

Now I have a sight picture to which I've become very accustomed. I know the tritium is arguably whatever, I'm just used to having it and if I have to take the Holosun off… I still have a Glock 19 that I'm used to carrying. Eyeballing it, I can't tell if it's even taller than the Slant-ledge on my 19.4.

106304

Very pleased indeed.I like the concept of Straight 8s but I also have to ask why. If iron sights are back ups to the dot do they need to be tritium?

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[BillSWPA]

I like the concept of Straight 8s but I also have to ask why. If iron sights are back ups to the dot do they need to be tritium?

Sent from my SM-G970U using Tapatalk

I am still new to pistol mounted optics, but like Masternave I also prefer tritium in my backup sights, as well as the bottom of the notch even with the bottom of the lens. If the optic stops working, I want the irons to be as close as I can get to being as good as I would have without the optic.

[GJM]

I like the concept of Straight 8s but I also have to ask why. If iron sights are back ups to the dot do they need to be tritium?

Sent from my SM-G970U using Tapatalk

I think the answer is, it depends. When the dot is working, and I see it, I want BUIS as low and dark as possible. For something like acquiring the dot in pitch darkness, support hand only, tritium is like lead in lights to the runway.

[Tokarev]

I think the answer is, it depends. When the dot is working, and I see it, I want BUIS as low and dark as possible. For something like acquiring the dot in pitch darkness, support hand only, tritium is like lead in lights to the runway.When does the weapon mounted light or even handheld come into play?

Sent from my SM-G970U using Tapatalk

[masternave]

I like the concept of Straight 8s but I also have to ask why. If iron sights are back ups to the dot do they need to be tritium?

I agree. However, Heinie does't make this sight without the tritium. 🤷

I'm also a newbie to the Land of Dots… so having a sight picture that I'm used to if I decide to put the MOS cover back on and give up on the experiment is desirable to me because I'm a poor.


How rounded/shirt friendly is this rear sight?

I've been carrying the slant-ledges for nearly a decade. I much preferr them to the Warnes I had before… but this is my first with this new MOS model. They seem very well designed and rounded, the ridges end and chamfer before the edge of the sight. They also seem slimline width, so that's interesting… methinks the shirt would be shielded from any possible abrasion by the side of the slide and optic.

[stomridertx]

I am still new to pistol mounted optics, but like Masternave I also prefer tritium in my backup sights, as well as the bottom of the notch even with the bottom of the lens. If the optic stops working, I want the irons to be as close as I can get to being as good as I would have without the optic.

I've determined for myself having anywhere from the full rear notch to 3/4 of the notch visible to be ideal, with perfect being the bottom of the notch dead even with the deck height. Having achieved what I describe as perfect with the Ameriglo GL-453/EPS/DPP plate combo, I really don't see why folks chase it even lower than that when it's the best of both worlds and doesn't impede the window at all when looking at the dot. Why NOT have a full iron sight picture available if it's not compromising use of the optic? Generally when target focusing and using the dot in this configuration, I never notice the irons.
Something not to be overlooked is the epoxy seal around the optic window. If you have the bottom of the rear notch even with the deck, some of the notch is still obscured by this sealant. I'd say a little under 1/4 or so and not enough to compromise the sight picture at all.

[GJM]

When does the weapon mounted light or even handheld come into play?

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Obviously a weapon light does a great job of illuminating plain black sights. Enough so, Bill Rogers joked that it took the first night session to have some students at Rogers look at their sights. Some of us mostly don't have a light on our pistol, and support hand only with the pistol probably means no handheld. That is why I said it depends, different people and different scenarios might cause black or tritium BUIS to be preferable. My most common setup is an orange front with tritium, and black rear -- the orange helps me pick up the front size through the optic display and the black rear doesn't draw my eye away from the red dot.

[masternave]

I've appreciated having tritium in the few low-light classes I took a while back… just having a sense of where the gun is in space before turning on my WML or offhand light prevented some spill and offset issues shooting around cover. I don't think it's going to mess with my sight picture with the dot too much, but if I hate it… there's always a black sharpie.

In my daily boring life, the main reason I keep buying tritium sights is that I tend to stand my flashlight next to the rear tritium on the nightstand so that I can grab it blindly in the dark.

[Serpico1985]

After a 6 month wait I got my gen 5 17 slide back from Agency Arms with their AOS optic cut and plate for the EPS Ivs had since December. The optic cut work seems stellar.

I went to install my EPS, you know, the one that’s been sitting for 7 months, and found that some of the epoxy from the rear window install got into the recess that the screws lock down on preventing the correct installation of the optic. Can’t tighten the screws enough for it not to rattle. I contacted Holosun and they approved a RMA. So it will get fixed, but dang, I’d be lying if I said it wasn’t a bummer for my first foray into a red dot.

May be hard tell from the photo but the screws can’t sit flush.

106353

106354

[G19Fan]

After a 6 month wait I got my gen 5 17 slide back from Agency Arms with their AOS optic cut and plate for the EPS Ivs had since December. The optic cut work seems stellar.

I went to install my EPS, you know, the one that’s been sitting for 7 months, and found that some of the epoxy from the rear window install got into the recess that the screws lock down on preventing the correct installation of the optic. Can’t tighten the screws enough for it not to rattle. I contacted Holosun and they approved a RMA. So it will get fixed, but dang, I’d be lying if I said it wasn’t a bummer for my first foray into a red dot.

May be hard tell from the photo but the screws can’t sit flush.

106353

106354

I would trim the screws with a dremel

[HeavyDuty]

After a 6 month wait I got my gen 5 17 slide back from Agency Arms with their AOS optic cut and plate for the EPS Ivs had since December. The optic cut work seems stellar.

I went to install my EPS, you know, the one that’s been sitting for 7 months, and found that some of the epoxy from the rear window install got into the recess that the screws lock down on preventing the correct installation of the optic. Can’t tighten the screws enough for it not to rattle. I contacted Holosun and they approved a RMA. So it will get fixed, but dang, I’d be lying if I said it wasn’t a bummer for my first foray into a red dot.

May be hard tell from the photo but the screws can’t sit flush.

106353

106354

30 second fix with an xacto under a magnifier.

[1Rangemaster]

I've appreciated having tritium in the few low-light classes I took a while back… just having a sense of where the gun is in space before turning on my WML or offhand light prevented some spill and offset issues shooting around cover. I don't think it's going to mess with my sight picture with the dot too much, but if I hate it… there's always a black sharpie.

In my daily boring life, the main reason I keep buying tritium sights is that I tend to stand my flashlight next to the rear tritium on the nightstand so that I can grab it blindly in the dark.

I've had that Heinie setup on a 43X for months now w/a small EPS and am very satisfied with it. As masternave said, a glowing dot or dots can help one orient to the gun in the dark. It has not affected my sighting negatively.
And, sorta like GJM, I like something on/in the front sight to highlight it.
My only suggestion for a carry piece would be to shoot it at a reasonable target to check impact without the dot on. For me, that's an 8" plate at 10-15 yards.

[acaixguard]

Does anyone know how to get replacement OEM screws from Holosun? I'm looking for a few spares of the largest set of screws that come with the EPS Carry (for use with the Staccato DPO system). Thanks in advance!

[RJ]

Does anyone know how to get replacement OEM screws from Holosun? I'm looking for a few spares of the largest set of screws that come with the EPS Carry (for use with the Staccato DPO system). Thanks in advance!

Call or email Holosun with the question?

I've found them to be very responsive.

106413

[RJ]

After a 6 month wait I got my gen 5 17 slide back from Agency Arms with their AOS optic cut and plate for the EPS Ivs had since December. The optic cut work seems stellar.

I went to install my EPS, you know, the one that’s been sitting for 7 months, and found that some of the epoxy from the rear window install got into the recess that the screws lock down on preventing the correct installation of the optic. Can’t tighten the screws enough for it not to rattle. I contacted Holosun and they approved a RMA. So it will get fixed, but dang, I’d be lying if I said it wasn’t a bummer for my first foray into a red dot.

May be hard tell from the photo but the screws can’t sit flush.



Sorry to hear, I hope Holosun takes care of this.

Based on the low 3 digit value of your serial number, that must be very early in production. My EPS C that arrived recently is 011xxx.

[JCN]

After a 6 month wait I got my gen 5 17 slide back from Agency Arms with their AOS optic cut and plate for the EPS Ivs had since December. The optic cut work seems stellar.

I went to install my EPS, you know, the one that’s been sitting for 7 months, and found that some of the epoxy from the rear window install got into the recess that the screws lock down on preventing the correct installation of the optic. Can’t tighten the screws enough for it not to rattle. I contacted Holosun and they approved a RMA. So it will get fixed, but dang, I’d be lying if I said it wasn’t a bummer for my first foray into a red dot.

May be hard tell from the photo but the screws can’t sit flush.

106353

106354


I would trim the screws with a dremel

Serpico1985 I agree with G19Fan….

That strongly, strongly, strongly looks like the screws are too long and bottoming out rather than epoxy if you’re getting a “rattle.”

If it’s epoxy, you’d still be able to clamp down enough to prevent rattling.

The rattle means the screw heads aren’t meaningfully in contact with anything.

[SoCalDep]

Serpico1985 I agree with G19Fan….

That strongly, strongly, strongly looks like the screws are too long and bottoming out rather than epoxy if you’re getting a “rattle.”

If it’s epoxy, you’d still be able to clamp down enough to prevent rattling.

The rattle means the screw heads aren’t meaningfully in contact with anything.

I agree as well. - they possibly included screws for the 407K/507K while the deck height of the EPS is slightly (something like .060”) lower.

[vandal]

After the 4' slide launch onto cement range floor and subsequent re-zeroing, the EPS Carry on my 365XL has held zero for 600 rounds now.

A friend just dropped his 365XL with EPS Carry while on a hike (presumably onto dirt), and also experienced a big shift in zero.

Out of curiosity I just dropped my G19.5 with EPS on it five times, tossing it forward from a height of five feet and aiming for the sides or top of the EPS to hit first. It was landing on Burbur carpet... not onto a cement range floor... but I had no loss of zero.

[WobblyPossum]

What’s the best way to trim screws with a dremel? Cutting wheel? How do you hold them steady while you cut?

[RJ]

What’s the best way to trim screws with a dremel? Cutting wheel? How do you hold them steady while you cut?

LMK if you can use a shorter pair. I have…a bunch of 8mm and 10mm McM-C M3-0.5 laying around. I ordered both because I wasn’t sure zactly what size to use. Be happy to pop a couple in an envelope to you.

[WobblyPossum]

LMK if you can use a shorter pair. I have…a bunch of 8mm and 10mm McM-C M3-0.5 laying around. I ordered both because I wasn’t sure zactly what size to use. Be happy to pop a couple in an envelope to you.

Thanks for the offer Rich. I appreciate it. I don’t have any immediate need for shorter screws. My question was more academic just so I would know what to do in the event I do need to shorten a set of screws.

[HeavyDuty]

What’s the best way to trim screws with a dremel? Cutting wheel? How do you hold them steady while you cut?

I have to do this fairly often in my modeling. I thread a nut of the appropriate size onto the screw and hold that with either small pliers or a small vise, and cut the screw with a reinforced Dremel cutoff wheel (not the brittle wafer type.)

[Tokarev]

https://youtu.be/EXQo75-I_EE

Sent from my SM-G970U using Tapatalk

[Serpico1985]

Thank you for all the comments.

I took some measurements with my calipers and agree that it seems the screws are bottoming out before they are locking down on the optic.

I think the epoxy is still an issue since I don't want the screws locking down on epoxy rather on the counter bore of the screw holes themselves.

But one issue at a time. I contacted Agency Arms with the picture and my observations.

I would assume they know about the need for shorter screws for the EPS optics and can just send me new ones ASAP.

This is quite frustrating.

But it will work out eventually.

[Clusterfrack]

I’ve come to the conclusion that measuring and trimming optic mounting screws is as standard as blue Locktite.

[G19Fan]

I’ve come to the conclusion that measuring and trimming optic mounting screws is as standard as blue Locktite.

Agreed 100%

[JCN]

Thank you for all the comments.

I took some measurements with my calipers and agree that it seems the screws are bottoming out before they are locking down on the optic.

I think the epoxy is still an issue since I don't want the screws locking down on epoxy rather on the counter bore of the screw holes themselves.

But one issue at a time. I contacted Agency Arms with the picture and my observations.

I would assume they know about the need for shorter screws for the EPS optics and can just send me new ones ASAP.

This is quite frustrating.

But it will work out eventually.

Order a Dremel. It’s super handy and you’ll need it sooner or later.

Things like small parts and screws for RDS are consumables. Buy a bunch and trim to size.

ACE hardware has what you need in a pinch.

Also, NBD to lock on epoxy.

Some optics are mounted with little plastic collars under the screw heads (Shield RMS) and it’s fairly standard to use a little loctite (or E6000) under the cap head to prevent it from shaking loose.

[Tokarev]

Oops. Wrong thread.

[Serpico1985]

FYI I spoke to Holosun today and they said that after completing the inspection process it will be replaced. They didn't offer any other explanation. New one is on the way.

[sparky-kb]

I couldn't help myself and bought the DPP Titanium 407/507K plate on Amazon to try out.

My DPP plate came in today. EPS Red 6 MOA should arrive in the next couple of days.

Which torque value did you use for EPS to DPP plate?

Holosun says 15 in lbs for the optic. The DPP plate instructions say 10 in lbs for optic to plate. DPP instructions also specify 12 in lbs for plate to Glock MOS slide.

Also, did you use the pre applied blue loctite on the screws or clean it off and reapply?

Thanks!

[stomridertx]

My DPP plate came in today. EPS Red 6 MOA should arrive in the next couple of days.

Which torque value did you use for EPS to DPP plate?

Holosun says 15 in lbs for the optic. The DPP plate instructions say 10 in lbs for optic to plate and 12 in lbs for plate to Glock MOS slide.

Also, did you use the pre applied blue loctite on the screws or clean it off and reapply?

Thanks!

I always clean the screws and receiving threads with acetone, then use Permatex 24005 Medium Strength Threadlocker Blue Gel. It dispenses like lip balm and is very easy to work with. For all pistol optic mounting I set my torque driver to 12 inch pounds knowing the lubrication provided by the threadlocker might take it to 13-15. I use a paint pen for witness marks and I haven't had one move on me yet. The reason I use Permatex gel instead of the Loctite blue chapstick is availability as I can buy it at any O'reilly's auto parts store.

[RJ]

The reason I use Permatex gel instead of the Loctite blue chapstick is availability as I can buy it at any O'reilly's auto parts store.

Genius!

[sparky-kb]

I always clean the screws and receiving threads with acetone, then use Permatex 2405 Medium Strength Threadlocker Blue Gel. It dispenses like lip balm and is very easy to work with. For all pistol optic mounting I set my torque driver to 12 inch pounds knowing the lubrication provided by the threadlocker might take it to 13-15. I use a paint pen for witness marks and I haven't had one move on me yet. The reason I use Permatex gel instead of the Loctite blue chapstick is availability as I can buy it at any O'reilly's auto parts store.

Thanks!

I'll set mine to 12 for optic to plate as you've done and check around for that permatex. Did you set your driver to 12 in lbs for the plate to slide as well?

[stomridertx]

Thanks!

I'll set mine to 12 for optic to plate as you've done and check around for that permatex. Did you set your driver to 12 in lbs for the plate to slide as well?

Yes.

[sparky-kb]

Yes.

Thanks! This is my first pistol optic so this is all new to me.

[Serpico1985]

Sent in EPS #392, got replaced with #8428.

Installed it no problem.

Looking forward to shooting it.

108003

[Whiskey_Bravo]

I forgot to post these. Here is the Calculated Kinetics MOS plate for my EPS.
108191
108189
108190
Very well made plate. Very tight fit with dry-fitting the optic to the plate.
108192
108193
You will need a long shank torx bit if you use a wrench like the Wheeler fat wrench.
108194
108196

108195
Looks excellent. Sits very low overall even though it's a plate system. No rounds through it yet due to a complete lack of time. This is not a work gun and is a backup to my EDC G19.5 MOS with ACRO P1. I will hopefully have some range time on it soon.

I'm a little annoyed with their website. I bought a set of Ameriglo GL-453 because per their description;

"GL-453 1L Tall Black serrated .220" Front, Flat Black .295" Rear. Good for a lower 1/5 co-witness on a Glock MOS and our DOGTAG for the EPS/EPS Carry."

It is not a lower 1/5. They are unusable. I will try switching out for some classic GL-429 sights and see how they work out.

[Noah]

I forgot to post these. Here is the Calculated Kinetics MOS plate for my EPS.
108191
108189
108190
Very well made plate. Very tight fit with dry-fitting the optic to the plate.
108192
108193
You will need a long shank torx bit if you use a wrench like the Wheeler fat wrench.
108194
108196

108195
Looks excellent. Sits very low overall even though it's a plate system. No rounds through it yet due to a complete lack of time. This is not a work gun and is a backup to my EDC G19.5 MOS with ACRO P1. I will hopefully have some range time on it soon.

I'm a little annoyed with their website. I bought a set of Ameriglo GL-453 because per their description;

"GL-453 1L Tall Black serrated .220" Front, Flat Black .295" Rear. Good for a lower 1/5 co-witness on a Glock MOS and our DOGTAG for the EPS/EPS Carry."

It is not a lower 1/5. They are unusable. I will try switching out for some classic GL-429 sights and see how they work out.

Not sure I blame Ameriglo- that plate looks thicker than most MOS plates.

[Whiskey_Bravo]

Not sure I blame Ameriglo- that plate looks thicker than most MOS plates.

That description was from the Calculated Kinetics website, not Ameriglo. They advertise that set as working with their product and EPS. My results did not align with their description.

[Noah]

That description was from the Calculated Kinetics website, not Ameriglo. They advertise that set as working with their product and EPS. My results did not align with their description.

Ah, I apologize, that makes more sense

[maximus83]

I'm a little annoyed with their website. I bought a set of Ameriglo GL-453 because per their description;

"GL-453 1L Tall Black serrated .220" Front, Flat Black .295" Rear. Good for a lower 1/5 co-witness on a Glock MOS and our DOGTAG for the EPS/EPS Carry."

It is not a lower 1/5. They are unusable. I will try switching out for some classic GL-429 sights and see how they work out.

Had the exact same experience recently. Like the plate, it's solid so far and I have about 400rds on it. But I ordered the next size up in sights (GL-455 as described on their page (https://www.calculatedkinetics.us/collections/sights/products/ameriglo-glock-mos-to-rmr-sights)) based on their description of lower 1/3 cowitness. As you said with yours, my sights were a good bit lower than the description, probably less than 1/5 even though they are taller than your 453's. And borderline unusable.

The upside: I contacted them, they are super cool about it and willing to work with you to swap out sights or whatever. Haven't decided yet whether to replace the 455's. Trying to see with more rounds downrange, if I can adapt to having such low, blacked-out BUIS. If I do switch, I'll probably go back to something taller and a front night sight, like the GL-511's I have on another G19 MOS with a 507C.

[G19Fan]

Had the exact same experience recently. Like the plate, it's solid so far and I have about 400rds on it. But I ordered the next size up in sights (GL-455 as described on their page (https://www.calculatedkinetics.us/collections/sights/products/ameriglo-glock-mos-to-rmr-sights)) based on their description of lower 1/3 cowitness. As you said with yours, my sights were a good bit lower than the description, probably less than 1/5 even though they are taller than your 453's. And borderline unusable.

The upside: I contacted them, they are super cool about it and willing to work with you to swap out sights or whatever. Haven't decided yet whether to replace the 455's. Trying to see with more rounds downrange, if I can adapt to having such low, blacked-out BUIS. If I do switch, I'll probably go back to something taller and a front night sight, like the GL-511's I have on another G19 MOS with a 507C.

Personally like lower 1/5 or lower 1/6 cowitness on backup irons

[MD7305]

That description was from the Calculated Kinetics website, not Ameriglo. They advertise that set as working with their product and EPS. My results did not align with their description.

Definitely contact them. They have excellent customer service.

I received their EPS plate for my M&P after not being totally satisfied with my C&H plates. The Calculated Kinetics plate is much thicker and raises the optic keeping the irons from cluttering the optic window. Where the C&H plates allow the mounting screws to pass through the optic and plate into the slide, the CK plate has hardware that attaches the plate to the slide and then separate hardware that attaches the optic to the plate. Ordinarily I would see the added hardware as a negative but the robustness of the plate and its neat fit to the optic and slide are so good that I'll deem it acceptable.

I did have an issue with the forward protrusion of the CK plate preventing my gun locking into my Safariland ALS holsters. I contacted CK via Instagram and they responded immediately. CK advised they planned on resizing their future plates to accommodate ALS holsters. I was impressed with their customer service as well as their plate.

[GJM]

https://youtu.be/Z1woYO4DWS4

[stomridertx]

https://youtu.be/Z1woYO4DWS4

He put my current thoughts into a video perfectly. I'm standardizing on this optic for carry and defensive guns and I'm over the side clamp of the 509T now that I know how low this optic sits on the slide.

[GJM]

He put my current thoughts into a video perfectly. I'm standardizing on this optic for carry and defensive guns and I'm over the side clamp of the 509T now that I know how low this optic sits on the slide.

I started my G5 20 test with an EPS and replaced it with a 509T as I thought it might be tougher for field use, but I plan to get a second G5 20 and mount the EPS on that one.

[Clusterfrack]

Just came back from Jagerwerks.

https://uploads.tapatalk-cdn.com/20230821/6f61332eea9adac7de7e26adfa76de6c.jpg
https://uploads.tapatalk-cdn.com/20230821/970b3c472fe245bfe87167adda52b736.jpg

[GJM]

Just came back from Jagerwerks.

https://uploads.tapatalk-cdn.com/20230821/6f61332eea9adac7de7e26adfa76de6c.jpg
https://uploads.tapatalk-cdn.com/20230821/970b3c472fe245bfe87167adda52b736.jpg

You got it for a friend? :play

[Clusterfrack]

You got it for a friend? :play

Me, myself, and I...

That 26 gets a lot of carry, and I'm hoping the EPSc makes it even more useful.

[DaBigBR]

He put my current thoughts into a video perfectly. I'm standardizing on this optic for carry and defensive guns and I'm over the side clamp of the 509T now that I know how low this optic sits on the slide.

It's certainly a solid "do all" pick. I sure hope that an EPS Comp with a big window comes along.

[stomridertx]

It's certainly a solid "do all" pick. I sure hope that an EPS Comp with a big window comes along.

I just hope Holosun has seen profit from offering multiple dot sizes beyond their circle dot and does this for new optics going forward. I feel like those of us that like the bigger dot are becoming an underserved minority so I hope they sold truckloads of the 6 MOA EPS models.

[DaBigBR]

It will be interesting to see where they go with diversifying the reticle options. The 6 MOA dot is cool. The 2 MOA dot only is cool. The new competition reticle system from the 507comp is cool. The only real concern is the effect of having a bunch of different SKUs for each model and being able to keep up with it. There are 12 SKUs in the EPS line.

[G19Fan]

I just hope Holosun has seen profit from offering multiple dot sizes beyond their circle dot and does this for new optics going forward. I feel like those of us that like the bigger dot are becoming an underserved minority so I hope they sold truckloads of the 6 MOA EPS models.

Sadly the 6 moa seems to move the slowest. Too many people following random guntubers suggesting 2 moa or only shooting at static range

[crosseyedshooter]

Sadly the 6 moa seems to move the slowest. Too many people following random guntubers suggesting 2 moa or only shooting at static range

This year, I've bought seven Holosuns with 6MOA dot and one with ACSS reticle, so I'm doing my best to support the 6MOA club. I think part of it is the "top-of-the-line" model with the solar panels and MRS has a 2MOA dot. For some reason, the majority of consumers seem to think the solar and switchable reticles are necessary. I'll happily continue to buy the less-expensive 6MOA versions.

[G19Fan]

This year, I've bought seven Holosuns with 6MOA dot and one with ACSS reticle, so I'm doing my best to support the 6MOA club. I think part of it is the "top-of-the-line" model with the solar panels and MRS has a 2MOA dot. For some reason, the majority of consumers seem to think the solar and switchable reticles are necessary. I'll happily continue to buy the less-expensive 6MOA versions.

I like having mrs and solar (only because I have had twice now that battery trays launched off a the range and I used solar no battery to finish session).

I carey circle so I like mrs. I wish there was a 6mo and circle (no dot) option

[crosseyedshooter]

I like having mrs and solar (only because I have had twice now that battery trays launched off a the range and I used solar no battery to finish session).

Part of my routine with new Holosuns is install a new Duracell battery, blue Loctite and paint-mark the battery tray screw. They've mostly come with finger-tight battery tray screws, well under the 5 in-lb stated in the manual. I only have a couple thousand rounds on one and a few hundred through each of the rest. I did notice that an EPS Carry with 5000+ serial number came with a significantly tighter battery tray screw and almost excessive thread-locker. Holosun may be getting tired of warranty calls for replacement battery screws. :p

[G19Fan]

Part of my routine with new Holosuns is install a new Duracell battery, blue Loctite and paint-mark the battery tray screw. They've mostly come with finger-tight battery tray screws, well under the 5 in-lb stated in the manual. I only have a couple thousand rounds on one and a few hundred through each of the rest. I did notice that an EPS Carry with 5000+ serial number came with a significantly tighter battery tray screw and almost excessive thread-locker. Holosun may be getting tired of warranty calls for replacement battery screws. :p

I def loctite but should witness marl the screw tray screw. Smart idea

[RJ]

I like having mrs and solar (only because I have had twice now that battery trays launched off a the range and I used solar no battery to finish session).

I carey circle so I like mrs. I wish there was a 6mo and circle (no dot) option

Ditto. Been shooting irons for over a year, so to get back to dots I put an EPSc MRS on my P365 X-Macro, and set it to circle only. It would have been nice to have a 6 MOA dot option, I really liked the sight picture on the 407k I had.

[Tokarev]

https://youtu.be/2AA2gPqTEtc?si=PH-jsWY5KU4BzyGC

[Serpico1985]

After having and shooting both dots I prefer the 6 moa version for now.

Difficult to photograph but a pretty good representation to the difference in size.

109333

[RJ]

I was finding that I was using the EPS Carry optic to rack the slide of my P365 XMacro frankengun more and more. Being the coating is pretty slippery, I thought I'd just cut some hockey tape and stick it on for a bit more grip...

Well. Being a retired engineer with time on my hands, one thing led to another...you know how it goes.

I ended up creating a template, then used it to cut a cover to fit:

109422

(It's not nearly as sketchy looking in person, for some reason the photo came out poorly and highlights all the defects.)

Later on (of course!) I found that Ranger Wraps make basically the same thing for around $20, but in case this helps out anyone else who just wants to DIY one, I attached the pattern and pdf below. I may still end up buying one, but this one seemed to work pretty well in Dry Practice today.

Oh yeah, the grid is 0.1". I tried to make the pattern so you'd only have to make straight cuts. You can still depress the buttons through the fabric. I put a length of tape onto a cardboard box top that had shiny tape still on it and a sharp knife to cut it out. I was too skeered to adhere it to the optic body and cut out the square for the solar panel. All you really need to do this is a length of 1" hockey tape or similar; I had some black laying around so that's what I used.

109423

[Sasage]

Will the Forward Control OPF-G-RMR work with the 407K?

[Noah]

Will the Forward Control OPF-G-RMR work with the 407K?

No the RMR footprint us different. A 407C or 507C uses an RMR footprint, the 407K/507K/EPS use a modified Shield RMSC footprint.

[Sasage]

No the RMR footprint us different. A 407C or 507C uses an RMR footprint, the 407K/507K/EPS use a modified Shield RMSC footprint.

Thank you. Looks like I need an rmr or pickup a dpp plate

[DMCutter]

My 3 or 4 month old EPS Carry on my CR920 crapped out today. I was at the range and tried to dim it down and the buttons weren't responding. I took the battery out (almost new Renata) and put it back in and it worked again. A little while ago I tried to adjust brightness again and it wouldn't change. I held down the + button for about 5 seconds and it turned off and won't come back on. Back to the mothership, I guess. I think I'd rather have a green MRS anyway...

[Noah]

My 3 or 4 month old EPS Carry on my CR920 crapped out today. I was at the range and tried to dim it down and the buttons weren't responding. I took the battery out (almost new Renata) and put it back in and it worked again. A little while ago I tried to adjust brightness again and it wouldn't change. I held down the + button for about 5 seconds and it turned off and won't come back on. Back to the mothership, I guess. I think I'd rather have a green MRS anyway...

Did you try it with a new/different battery? How new is almost new?

[DMCutter]

Did you try it with a new/different battery? How new is almost new?
Battery was installed 3 weeks ago, package says they're good until 2/29. I haven't tried another one yet but I will before I send it back. I've seen different oddball behaviors with low batteries before but I don't think anything like this.

[eric0311]

My 3 or 4 month old EPS Carry on my CR920 crapped out today. I was at the range and tried to dim it down and the buttons weren't responding. I took the battery out (almost new Renata) and put it back in and it worked again. A little while ago I tried to adjust brightness again and it wouldn't change. I held down the + button for about 5 seconds and it turned off and won't come back on. Back to the mothership, I guess. I think I'd rather have a green MRS anyway...

Literally the same thing happened to mine last week… back to Holosun it goes… and RMR will take its place.

[vandal]

EPS Carry 6MOA Red quit after about 6 weeks of occasional use, on brightness setting max-minus-2. Had installed a new Duracell 1620. After a flight, found no dot. Thought perhaps I left it unlocked after last range trip. Button up a few times brought the dot back. Four days of use. After return flight, found it off and would not turn back on. Replaced with another new Duracell 1620 and will monitor.

Previously this gun had an EPS Carry 2MOA Red on it which had been running on the original battery for 6 months without issue. I just decided I preferred the 6MOA. Now I have to keep the 2MOA around as a backup.

[MVS]

The 6 moa on my 365 XL has been great. Hopefully I will have as good of luck with this one.
109475109474

[DMCutter]

I put in a new battery and it's acting the way it's supposed to. Hopefully I can get to the range again tomorrow and see if it keeps working. In the meantime, I'll be going back to my 365/507k.

[DMCutter]

The EPS carry ran without a hitch during today's range session so maybe it was just the battery. As a bonus, when I took out my 365 to shoot some plates I found that I need a new battery for that one, too.

[G19Fan]

The EPS carry ran without a hitch during today's range session so maybe it was just the battery. As a bonus, when I took out my 365 to shoot some plates I found that I need a new battery for that one, too.

My eps have all sort of weird issues when on low battery

[Harry Flashman]

I seem to be having a problem with my EPS carry green 6 MOA. I bought one a few months ago. When I increase the brightness level I got would looked like zig zag reticle lines coming from the edge of the optic on the left and bottom. This bothered me as I never had the problem with the EPS green 6 MOA I have had for about a year. So the EPS carry went back to Holosun. They sent me another, as I expected they would. Just turned on the optic as I was getting ready to mount it, and low and behold, if I increase the brightness, I get the same zig zag reticle line coming from the left and right this time. I did change batteries.

Is this something you all have seen with the EPS carry and I just need to get used to it?

I have an EPS, 509, and 507 and I have never had the issue come up before with a Holosun.

When I tried to take a picture, the zig zag lines do not appear, so I cannot show you what it looks like.

I am not ragging Holosun, like I said they sent another one to me, just want to know if this is an issue with this model.

Thanks for any info.

[DMCutter]

Well, dammit, it's not responding to the buttons again. I just filled out a warranty claim, so we'll see how long replacement takes. Bummer.

[Clusterfrack]

Well, dammit, it's not responding to the buttons again. I just filled out a warranty claim, so we'll see how long replacement takes. Bummer.

Bummer. Sounds like you got a bad one. Keep us posted.

[Clusterfrack]

I seem to be having a problem with my EPS carry green 6 MOA. I bought one a few months ago. When I increase the brightness level I got would looked like zig zag reticle lines coming from the edge of the optic on the left and bottom. This bothered me as I never had the problem with the EPS green 6 MOA I have had for about a year. So the EPS carry went back to Holosun. They sent me another, as I expected they would. Just turned on the optic as I was getting ready to mount it, and low and behold, if I increase the brightness, I get the same zig zag reticle line coming from the left and right this time. I did change batteries.

Is this something you all have seen with the EPS carry and I just need to get used to it?

I have an EPS, 509, and 507 and I have never had the issue come up before with a Holosun.

When I tried to take a picture, the zig zag lines do not appear, so I cannot show you what it looks like.

I am not ragging Holosun, like I said they sent another one to me, just want to know if this is an issue with this model.

Thanks for any info.

How bright do you have to turning it to make this happen? Or does it happen each time you click and then go away?

[GJM]

It is interesting that the EPS Carry has had multiple reports of units with problems, where I am not reading about many issues with the EPS full size. I have been running three and now four without issue.

[Clusterfrack]

It is interesting that the EPS Carry has had multiple reports of units with problems, where I am not reading about many issues with the EPS full size. I have been running three and now four without issue.

My 2 EPS have been trouble free, as has my EPS Carry. Fingers crossed.

[Up1911Fan]

No issues with my 4 EPS Carry's.

[Harry Flashman]

It was at brightness level 3 or 4. I sent it back on Friday so I cannot be exact.

I have an EPS GR6 and I am happy with it. I know Holosun will send me another one, just want this one to be as good as my others.

I have a newly cut Glock 48 slide that is lonesome so I just hate waiting.

[MVS]

It is interesting that the EPS Carry has had multiple reports of units with problems, where I am not reading about many issues with the EPS full size. I have been running three and now four without issue.

I could be wrong, but I have to imagine they have sold a lot more of the Carry model.

[GJM]

I could be wrong, but I have to imagine they have sold a lot more of the Carry model.

My theory was that they started shipping the EPS Carry first, and worked the manufacturing bugs out by the time the EPS shipped.

[MVS]

My theory was that they started shipping the EPS Carry first, and worked the manufacturing bugs out by the time the EPS shipped.

That is possible. I only have 2 with quite gap between them but so far no problems with either.

[DMCutter]

Bummer. Sounds like you got a bad one. Keep us posted.

I had a shipping label same day, returned it the next day,(9/24) and just got a notice that my replacement is being shipped. I can't complain about their service.

[DMCutter]

My original EPS Carry came back to me today, no note of explanation from Holosun what was wrong with it. It came back with an Energizer and appeared to be working fine. I took out their battery and put in the Renata that I had put in it how ever many weeks ago, and it wouldn't turn on. That was the second of a batch I bought on Amazon and was only in the sight for a week or so before it crapped out. So I'm thinking that maybe my Renata batteries are counterfeit (do people knock those off?) or I just got a couple lemons and maybe the sight was fine all along. I'm surprised that they sent the old sight back and hoping they didn't just stick battery in it and say "yup, it works, send it back". I remounted it and I'll probably get to the range Thursday to see how it goes.

[GJM]

My original EPS Carry came back to me today, no note of explanation from Holosun what was wrong with it. It came back with an Energizer and appeared to be working fine. I took out their battery and put in the Renata that I had put in it how ever many weeks ago, and it wouldn't turn on. That was the second of a batch I bought on Amazon and was only in the sight for a week or so before it crapped out. So I'm thinking that maybe my Renata batteries are counterfeit (do people knock those off?) or I just got a couple lemons and maybe the sight was fine all along. I'm surprised that they sent the old sight back and hoping they didn't just stick battery in it and say "yup, it works, send it back". I remounted it and I'll probably get to the range Thursday to see how it goes.

A battery tester is a "must have" diagnostic tool for my red dot optics.

https://www.amazon.com/gp/aw/d/B000FQG1XE?psc=1&ref=ppx_pop_mob_b_asin_title

[ssb]

Is there a recommended BUIS set for a milled Glock and an EPS? I prefer lower 1/4ish and value an unobstructed window. I do not want tritium.

[GJM]

Is there a recommended BUIS set for a milled Glock and an EPS? I prefer lower 1/4ish and value an unobstructed window. I do not want tritium.

A .240 front works with the EPS on a MOS, and .215/.220 probably works even better. Milled you should be able to use OEM height, depending on your cut.

[Harry Flashman]

So I sent the EPS Carry GR6 back twice because I was seeing jagged reticle lines as I increased the brightness. I just got another one back. But, it was not a carry but an EPS GR6. At about 8 presses of the + button I am seeing jagged reticle lines again. I contacted Holosun saying they sent me the wrong model back. I was hoping they would see "our mistake, keep that one and we will send you a EPS Carry GR6", but they did not. They send return it and we will send you the right model back. That is fair, but hey, can't blame a guy for hoping.

Anyway, I checked the EPS GR6 I have had for awhile. I never noticed, but at about 7 presses of the + button I see one jagged reticle line. Never really noticed at it is not as pronounced as the I saw in the others. Maybe it is just my eyes, stigmatisms do weird things.

But when I checked my 509 there was no such reticle lines. Maybe smaller dot, different effects, who knows.

So I will send the EPS back and await the EPS carry. Hope that works as well, but I think I am done with this matter. I am going to write it off as it may be my eyes. At max brightness it seems my RMR also shows what looks like a reticle line.

If I get another dot I was looking at an ACRO P2, we will see how that works.

[DaBigBR]

Is there a recommended BUIS set for a milled Glock and an EPS? I prefer lower 1/4ish and value an unobstructed window. I do not want tritium.

MOS: Ameriglo GL-453 "1L" height sights are just barely visible. I use them for the EPS and Steiner MPS on an MOS gun.

Milled: Essentially any "normal" sights as long as the pocket is cut deep enough. I am using Ameriglo GT-504 (I think) on my milled EPS gun. Just barely visible.

[stomridertx]

MOS: Ameriglo GL-453 "1L" height sights are just barely visible. I use them for the EPS and Steiner MPS on an MOS gun.

Milled: Essentially any "normal" sights as long as the pocket is cut deep enough. I am using Ameriglo GT-504 (I think) on my milled EPS gun. Just barely visible.

Some of this depends on the MOS plate. With the DPP plate on my G19 the GL-453s are completely visible as the bottom of the rear notch is almost dead even with the deck of the optic. I love that setup as the GL-453s behave like normal sights in use without holdoffs to compensate for height over bore. Holosun's plate is way thicker and probably would obscure them altogether, other plates are in between the 2 extremes. I think the Calculated Kinetics plate is pretty thick too.

[GJM]

MOS: Ameriglo GL-453 "1L" height sights are just barely visible. I use them for the EPS and Steiner MPS on an MOS gun.

Milled: Essentially any "normal" sights as long as the pocket is cut deep enough. I am using Ameriglo GT-504 (I think) on my milled EPS gun. Just barely visible.

I have been using these with a MOS and DPP plate:

https://www.amazon.com/gp/aw/d/B089NY45DR?psc=1&ref=ppx_pop_mob_b_asin_title

[vandal]

What's the finish on those XS sights? They don't specify anywhere if they are nitrided.


I have been using these with a MOS and DPP plate:

https://www.amazon.com/gp/aw/d/B089NY45DR?psc=1&ref=ppx_pop_mob_b_asin_title

[GJM]

What's the finish on those XS sights? They don't specify anywhere if they are nitrided.

Not sure, but they haven't been rusting.

[vandal]

And I'm assuming you haven't had them drifting in the rear sight cut despite no set screw?

I just ordered a set from XS Sights directly. They provided a 20% off coupon for first order on signing up for emails, so my total shipped was all of $48.


Not sure, but they haven't been rusting.

[flyrodr]

Put an EPS on my new G26.5 MOS. Sighted it in at 10 yds; nice centered group. Moved to 25 yds and group was way high and right. Adjusted dot and got this group, and called it good (one round in the eight, and one in the seven. The latter was a clear jerk on my part. Still a 90+ score. Good for my 74 yr old body, and eyes that must be about 100 yrs old.

110758

Oh, and replaced stock "irons" with XS sights. And forgot to even check those. But I like the location. Lower than perhaps normal in optic window, but enough visible to use. Will have to verify alignment next range trip.

Fired a few quick paced shots with the G26 and a P365 that I pocket carry a lot. No comparison for me. I shoot the Glock much faster and more accurately. But it won't fit in my pocket. Comparison makes that issue worth working around though.

P.S. It's nice to have GJM to be a beta tester!

[Rick R]

My aging eyes want to know, could the EPS Carry be direct milled into the slide of a 1911 and maybe be usable with the stock sights?

[G19Fan]

My aging eyes want to know, could the EPS Carry be direct milled into the slide of a 1911 and maybe be usable with the stock sights?

Mill yes. Not sure on sights

[Tokarev]

Some of this may already be posted. Apologies if it is.

Here is some rear sight / deck height measurements for the Holosun EPS Carry and the SIG Romeo-X Compact.

Measuring from the sight base plate to the top of the rear sight.

Holosun .293"
X Compact .322"

And then the Romeo-X Pro which fits the Pro or Leupold footprint. Measured from sight base to top of rear.

X Pro .342"



Sent from my SM-G970U using Tapatalk

[vandal]

Installed the XS sight set yesterday. They're going in the parts bin. Not a fan of the rear sight, which has a noticeable gap between the top of the slide and the bottom of the rear sight face. The rear sight also sweeps back, and slants back so it's positioned and angled to cut into my shirts (and my spare tire).

I think I've settled on the 10-8 low profile rear sight (https://www.10-8performance.com/glock-rear-sight-low-profile-standard-height/). The profile minimizes the use of window space, and it has a set screw. Paired with a .250 high front (I'm new to fiber front sights and am giving the 10-8 a try). This is the .115W front but I have the .125W en-route.

Here it is on the 19.5MOS with EPS on DPP plate.

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(Looks like I need to dust my lenses!)

But yeah, that 10-8 combo is 2X the cost of the XS set.



I have been using these with a MOS and DPP plate:

https://www.amazon.com/gp/aw/d/B089NY45DR?psc=1&ref=ppx_pop_mob_b_asin_title

[GJM]

My primary 19 has the DPP MOS plate, EPS full size 6, and just the OEM sights, with the rear reversed so there is no white outline. It just barely works, but it is very low profile and easy on me and clothing. I wish there was a very rounded rear that paired with a .215 front as that would be about perfect.

111226

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[Elwin]

My aging eyes want to know, could the EPS Carry be direct milled into the slide of a 1911 and maybe be usable with the stock sights?

I just had two 1911s direct milled for the EPS Carry and got them back.

I have typically seen this specific instal done by having the EPS Carry rear replace the stock rear, so there is no longer any rear sight. If you want to do this so that you have your actual rear sight properly cowitnessing, I'd consult your chosen milling shop about that. In addition to height, there may also be an issue with getting the optic far forward enough depending on how far back the rear sight is or isn't.

On my guns, the optic is very low, but that's because both of my guns had adjustable sight cuts, which results in the optic sitting even lower than it would on another 1911 where all that slide material isn't missing from the start. My front sights are getting filed down, because the EPS backup rear sits much lower than the original rears did. How much filing will ultimately be necessary will be determined when I can get to the range. I have taken a first go at removing some material from them so I don't spend all my time at the range using a file.

So the answer to your question is, it may or may not work with stock sights, but will definitely work with deletion of the existing rear. If the latter, you may or may not need to either buy a shorter front sight (Dawson is your friend) or file your existing one if it's a plain black front like mine are.

My slides were done by Impact Machine, and based on the research I did first I think Green Tick Tactical may also be worth talking to.

Pic for reference (this is after taking a few passes at filing the front):

[Rick R]

I just had two 1911s direct milled for the EPS Carry and got them back.

Pic for reference (this is after taking a few passes at filing the front):

Thanks for the information and the photo. Either the EPS is bigger than I envisioned or a 1911 is smaller, but that may lead me to trying something different.

[Tokarev]

Is battery tray screw size and good replacement options mentioned in these almost 900 posts?

The battery tray screw has fallen out of my EPS Carry. It is a different size than the one used on the 509T of which I have an extra.

Anyone have a recommendation for a replacement? Are the Phillips heads some places are selling a good option?

Sent from my SM-G970U using Tapatalk

[GJM]

Is battery tray screw size and good replacement options mentioned in these almost 900 posts?

The battery tray screw has fallen out of my EPS Carry. It is a different size than the one used on the 509T of which I have an extra.

Anyone have a recommendation for a replacement? Are the Phillips heads some places are selling a good option?

Sent from my SM-G970U using Tapatalk

My recollection from this and/or other threads, is that Holosun is good about sending out replacements.

[MD7305]

Is battery tray screw size and good replacement options mentioned in these almost 900 posts?

The battery tray screw has fallen out of my EPS Carry. It is a different size than the one used on the 509T of which I have an extra.

Anyone have a recommendation for a replacement? Are the Phillips heads some places are selling a good option?

Sent from my SM-G970U using Tapatalk

I bought a few here:
https://tacrig.com/product/holosun-eps-eps-carry-battery-tray-screw/

[Tokarev]

My recollection from this and/or other threads, is that Holosun is good about sending out replacements.

I bought a few here:
https://tacrig.com/product/holosun-eps-eps-carry-battery-tray-screw/

I assume Holosun will send me one. But it might be nice to have a couple extra on hand just in case.



Sent from my SM-G970U using Tapatalk

[Clusterfrack]

Is battery tray screw size and good replacement options mentioned in these almost 900 posts?

The battery tray screw has fallen out of my EPS Carry. It is a different size than the one used on the 509T of which I have an extra.

Anyone have a recommendation for a replacement? Are the Phillips heads some places are selling a good option?

Sent from my SM-G970U using Tapatalk

I believe this is the spec, but have not verified.

M2.5x0.45x5mm or 6mm
https://www.mcmaster.com/91698A240/
https://www.mcmaster.com/product/91294A012

[Elwin]

One of my slides either came back from Impact without the tray screw in it or I lost it at some point before suddenly noticing its absence days later. I ordered a set of spares from Tacrig, so now I’ll be set once Impact tells me what the spec is for the mounting screws so I can grab some of those too.

[Oldherkpilot]

I bought a few here:
https://tacrig.com/product/holosun-eps-eps-carry-battery-tray-screw/

Thanks for the tip-just ordered two and they gave me free shipping. Can't remember the last time I spent so little!

[rainman]

Anyone care to recommend a MOS plate to mount an EPS/EPS Carry on a Glock 26/19?

I like the Forward Control Designs plates for MOS, but they don't support Holosun.

This one looks like it will work but haven't used CH...
https://chpws.com/product/v4-mil-leo-adapter-holosun-eps-eps-carry-fits-glock-mos-preorder/

Thanks in advance for recommendations.


-Rainman

[rawkguitarist]

Anyone care to recommend a MOS plate to mount an EPS/EPS Carry on a Glock 26/19?

I like the Forward Control Designs plates for MOS, but they don't support Holosun.

This one looks like it will work but haven't used CH...
https://chpws.com/product/v4-mil-leo-adapter-holosun-eps-eps-carry-fits-glock-mos-preorder/

Thanks in advance for recommendations.


-Rainman

I've seen some hit and miss commentary about C&H. But I've had great service from them including 2 slide millings and one of their MOS plates. I'd recommend it for sure.

[GJM]

Anyone care to recommend a MOS plate to mount an EPS/EPS Carry on a Glock 26/19?

I like the Forward Control Designs plates for MOS, but they don't support Holosun.

This one looks like it will work but haven't used CH...
https://chpws.com/product/v4-mil-leo-adapter-holosun-eps-eps-carry-fits-glock-mos-preorder/

Thanks in advance for recommendations.


-Rainman

I have used a bunch of these with the EPS full size on MOS pistols. I prefer them to the alternative at any price and they are half the price of CHPWS.

https://www.amazon.com/gp/aw/d/B09PFPWKCB?psc=1&ref=ppx_pop_mob_b_asin_title

[MVS]

I have used a bunch of these with the EPS full size on MOS pistols. I prefer them to the alternative at any price and they are half the price of CHPWS.

https://www.amazon.com/gp/aw/d/B09PFPWKCB?psc=1&ref=ppx_pop_mob_b_asin_title

Very interesting. I didn't realize there was another alternative. I recently needed a filler plate to put a 507Comp on my AXG Legion and C&H was out of stock. I got a Springer Precision but didn't like a few things about it, namely it was way thicker than needed for a filler plate and it didn't actually have any locaters on it like the C&H do. The C&H came a couple of days later and I stuck that on. Of course like I often find with their products the machining leaves a bit to be desired and it was quite loose in the front to back direction though the side to side was good because of the locaters on the bottom.

[JHC]

I have used a bunch of these with the EPS full size on MOS pistols. I prefer them to the alternative at any price and they are half the price of CHPWS.

https://www.amazon.com/gp/aw/d/B09PFPWKCB?psc=1&ref=ppx_pop_mob_b_asin_title

I saw on another thread the DPP might require an exceptionally taller set of iron BUIS. Am I mis-understanding that?

[GJM]

I saw on another thread the DPP might require an exceptionally taller set of iron BUIS. Am I mis-understanding that?

No. I am getting away with the OEM sights as lower 1/8 witness and they are sufficient for my needs. A .200 front would be a bit better.

[rainman]

Many thanks rawkguitarist and GJM - plate on the way!


-Rainman

[Basher]

Any current feedback on how these are holding up? I'm seeing several reports lately of poor QC on the EPS Carry line, and I'm looking for an optic for a G48. I'd intended to do an EPS Carry, but may settle for a 407K until the QC issues get sorted if there's any substance to the claims. I consider PF a far more definitive source of info over the likes of Facebook groups or other more casual forums, hence the question. I'm specifically looking at a 6MOA model, if that matters. Thanks everyone!

[GJM]

Any current feedback on how these are holding up? I'm seeing several reports lately of poor QC on the EPS Carry line, and I'm looking for an optic for a G48. I'd intended to do an EPS Carry, but may settle for a 407K until the QC issues get sorted if there's any substance to the claims. I consider PF a far more definitive source of info over the likes of Facebook groups or other more casual forums, hence the question. I'm specifically looking at a 6MOA model, if that matters. Thanks everyone!

I have a half dozen full size EPS optics in use, and none have experienced an issue. Only one EPS Carry, and not enough rounds to form an opinion. YVK had to send an early Carry back. The EPS (full size) came after the Carry, and my belief is that they improved things before releasing it.

[crosseyedshooter]

Any current feedback on how these are holding up? I'm seeing several reports lately of poor QC on the EPS Carry line, and I'm looking for an optic for a G48. I'd intended to do an EPS Carry, but may settle for a 407K until the QC issues get sorted if there's any substance to the claims. I consider PF a far more definitive source of info over the likes of Facebook groups or other more casual forums, hence the question. I'm specifically looking at a 6MOA model, if that matters. Thanks everyone!

After going through 7 EPS Carry to get 4 good ones earlier this year, I'm still on the EPS Carry train. All of my EPS Carry are the 6MOA dot. I'm actually in the process of switching dot colors from green to red. The latest EPS Carry RD6 I bought has slightly neater epoxy around the edges and smaller shoulder M3 screws (still 12mm OAL). I think they've been improving them since the release. Whether it's at a level of quality acceptable to you is hard to say.

If you don't want/need an enclosed sight, I still think the 407k is the best "k" red dot for the money. I've also been playing with the 507k ACSS and planning to use one for IDPA. That one has a 3MOA dot and giant (230 MOA) Vulcan ring to help locate the dot when doing odd presentations.

[stomridertx]

I saw on another thread the DPP might require an exceptionally taller set of iron BUIS. Am I mis-understanding that?
I think you are interpreting DPP as Delta Point Pro instead of the name of this particular company. This is actually the thinnest plate there is for the EPS/K optics. I don't know what DPP stands for in their company name, but they succeeded in creating confusion. At least it's not a cringe weird name like other Chinese sellers adopt. Example: Excellent Elite Spanker. I'm not sure how much spanking you have to do to become an excellent elite spanker, but they have figured it out.

[rainman]

No. I am getting away with the OEM sights as lower 1/8 witness and they are sufficient for my needs. A .200 front would be a bit better.

I currently have a RMR w/Ameriglo GL-491 sights on my G26...
https://ameriglo.com/products/details/gl-491

Do you think that the .365 front / .451 rear sights would be too tall and occupy too much of the EPS Carry window?


-Rainman

[GJM]

I currently have a RMR w/Ameriglo GL-491 sights on my G26...
https://ameriglo.com/products/details/gl-491

Do you think that the .365 front / .451 rear sights would be too tall and occupy too much of the EPS Carry window?


-Rainman

They would be grotesquely large! You want a .200 or .220 front with the EPS on a MOS.

[rainman]

They would be grotesquely large! You want a .200 or .220 front with the EPS on a MOS.

Thanks for the prompt response sir.


-Rainman

[GJM]

JHC recommended the Ameriglo GL-5353 and I just received them from Midway and installed them on my 19 MOS with an EPS on a DPP plate. Heights are perfect.

112737

112738

[xring]

JHC recommended the Ameriglo GL-5353 and I just received them from Midway and installed them on my 19 MOS with an EPS on a DPP plate. Heights are perfect.

112737

112738

That’s exactly how I prefer my co-witness to look!

[rainman]

JHC recommended the Ameriglo GL-5353 and I just received them from Midway and installed them on my 19 MOS with an EPS on a DPP plate. Heights are perfect.

That looks excellent.

Those sights look like they will work with my EPS Carr/DPP plate. I believe the height at the bottom of the window should be very close; is that correct?


-Rainman

[GJM]

That looks excellent.

Those sights look like they will work with my EPS Carr/DPP plate. I believe the height at the bottom of the window should be very close; is that correct?


-Rainman

I have an EPS full size with a DPP plate, so yes.

[vandal]

Just got a set off Amazon and they are (nearly) perfect. I'd like a set screw for the rear but they are ideal height.


JHC recommended the Ameriglo GL-5353 and I just received them from Midway and installed them on my 19 MOS with an EPS on a DPP plate. Heights are perfect.

[capo56]

Hi, could you recommend plate for Glock 17 MOS to install EPS, that would be reliable and the thinnest as possible? I have 4.5m/0.18inch front sights (measured from the slide to center of sight) - will it be visible or do I have to replace it? Witch my current reddot Vortex Venom sigts are not visible, just precisely on the bottom edge of it...
Anything better then already linked DPP Titanium? Thanks.

[M1Garand]

EPS cold test-pass. Let it set out for an hour while walking the dog. Shake awake turned on, shot 1 mag of 20 for a total of 7400 rounds since mounting. I used Prematex gasket maker between the slide-plates-sight still tight and zeroed.

113149

[Clusterfrack]

Does anyone know the McMaster Carr screw that replaces the EPS battery tray screw?

I can now confirm that the following is a replacement for the EPS and EPS carry battery tray screw:

Black-Oxide 18-8 Stainless Steel Phillips Flat Head Screws, M2.5 x 0.45 mm Thread, 5 mm Long, Packs of 100
https://www.mcmaster.com/catalog/91698A241

4mm should fit as well.

RJ maybe add to the QR card?

GJM

[GJM]

I can now confirm that the following is a replacement for the EPS and EPS carry battery tray screw:

Black-Oxide 18-8 Stainless Steel Phillips Flat Head Screws, M2.5 x 0.45 mm Thread, 5 mm Long, Packs of 100
https://www.mcmaster.com/catalog/91698A241

4mm should fit as well.

RJ maybe add to the QR card?

GJM

Will these work on the 407k/507k and 507 Comp as well?

[Clusterfrack]

Will these work on the 407k/507k and 507 Comp as well?

I don't have that optic...

[GJM]

Will these work on the 407k/507k and 507 Comp as well?

Google says the EPS full size and Carry use one size screw and the other pistol optics use this size, although I am not savvy enough to find them on McMaster:

ALLOY STEEL M2 x 0.4mm x 4mm FLAT SOCKET CAP SCREW

[RJ]

I can now confirm that the following is a replacement for the EPS and EPS carry battery tray screw:

Black-Oxide 18-8 Stainless Steel Phillips Flat Head Screws, M2.5 x 0.45 mm Thread, 5 mm Long, Packs of 100
https://www.mcmaster.com/catalog/91698A241

4mm should fit as well.

RJ maybe add to the QR card?

GJM

Working on it.

The M2.5x0.45x5 mm screw, this is common to all Holosun Battery Trays, correct? (507c, 407c, 507k, 407k, EPS, EPS Carry, 508, 509, 510 etc?)

[GJM]

Working on it.

The M2.5x0.45x5 mm screw, this is common to all Holosun Battery Trays, correct? (507c, 407c, 507k, 407k, EPS, EPS Carry, 508, 509, 510 etc?)

No there are two sizes, one for the EPS full and carry, and one size for all the others.

[Clusterfrack]

Holosun 509T X2
CR1632 battery
Battery tray screw:
McMaster Carr 91294A002
Black-Oxide Alloy Steel 0.050” Hex Drive Flat Head Screw, 90 Deg Countersink Angle, M2 x 0.40

Philips head version: Black-Oxide 18-8 Stainless Steel Phillips Flat Head Screws, M2 x 0.4 mm Thread, 4 mm Long
https://www.mcmaster.com/catalog/129/3435/91698A200

[Whiskey_Bravo]

I have been searching for the ideal plate and sight configuration for my G19.5 MOS and EPS for some time. I find myself constantly disappointed and wish I just sent a slide to be direct milled with a BUIS in front of the optic. May still do this...

For now, the Eleven-71 MOS/EPS plate is mounted on my slide. Incredible plate with incredible craftsmanship. I was previously using the Calculated Kinetics Dogtag plate but stripped and then sheared one of the screws when trying to remove the plate. That slide is now with a machinist friend who is trying to remove the broken off post.

I tried a set of Ameriglo GL-429 sights with Elven-71 and they were too tall. Took up about 1/3 of the optic window. I then tried a set of Ameriglo GL-455 3L sights (.260" Front & .335" Rear). These just barely cleared the deck of the optic body and didn't seem useable to me.

I had a set of Night Fision Costa Ludus sights in my parts box from a G26.5 MOS before it got a SCS. These sights provide an almost perfect lower 1/4 co-witness. The edge of the optic deck cuts the large yellow high-vis almost perfectly in half. Their website lists these as a 0.249" front and 0.330" height rear. So I really don't understand why these worked and the Ameriglo GL-453s didn't.

I tested the Costa Ludus sights in some different lighting conditions and they do seem overly bright in daylight. Not sure if I'm sold on them.

113374
113375
113376
113377
113378
113379

I think I hate everything and should just order a bunch of Dawsons.

[Whiskey_Bravo]

Latest edition of Watch WB Get Frustrated With Sights:

Dawson Precision 0.375" tall rear with 0.370" tall front sight combined with full size EPS, Eleven-71 Design plate, and G19.5 MOS.

114032

114033

114034

These are in-between a lower 1/3 and 1/4 co-witness. Would ideally like a little shorter I think, but these are pretty good. The next sized down rear pairs with a 0.340" height front. Dawson only offers the .340 in tritium and I am not interested in that.

[evi1joe]

I know that all black rears are all the rage, but I love the Costa-Ludis or TCAP / CAP style sights (or to a lesser degree i-dots). I sometimes have a hard time seeing the rear sights (just like a yellow/white/green colored front sight sometimes doesn't "pop" well through an optic for me).

I'm sending of my G19.5 to get milled for the EPS tomorrow, but I sure hope the new SCS-K model will also fit nicely, because I can see upgrading to that. I'm guessing OEM glock height sights (.165-.180) will be useable, but won't know for sure until I get it back. I'm going to use Battlewerx as they seem to cut even deeper than Maple Leaf (and had a faster turnaround last I read).

PS -- Battlewerx sells a replacement screw for the battery tray (see link).
https://www.battlewerx.com/holosun-eps-eps-carry-battery-tray-replacement-screw/
They list the size as: M2.5 x 0.45mm x 4mm FLAT HEAD SCREW (PHILLIPS DRIVE)

[RennBaer]

I tried a set of Ameriglo GL-429 sights with Elven-71 and they were too tall. Took up about 1/3 of the optic window. I then tried a set of Ameriglo GL-455 3L sights (.260" Front & .335" Rear). These just barely cleared the deck of the optic body and didn't seem useable to me.

I had a set of Night Fision Costa Ludus sights in my parts box from a G26.5 MOS before it got a SCS. These sights provide an almost perfect lower 1/4 co-witness. The edge of the optic deck cuts the large yellow high-vis almost perfectly in half. Their website lists these as a 0.249" front and 0.330" height rear. So I really don't understand why these worked and the Ameriglo GL-453s didn't.

Maybe you figured it out already, but you were dealing with the difference between overall height and blade height (height above slide). Unfortunately, different sight manufacturers list their sight heights differently, so you need to be careful when comparing sight heights between manufacturers. Ameriglo lists their sights using overall height, so you need to subtract .08" to get the blade height if it's not listed in the specs. Dawson Precision lists their sights using blade height.

I've had good luck buying low co-witness sights by measuring the height of the rear deck of the optic above the slide, adding .100" to that measurement, and finding whichever sight gives me that blade height.

[GJM]

I just had an EPS Carry on a Macro start acting funky. I changed the battery and it started acting normal again. Checked the battery on our tester, and it showed discharged. The battery tester is an important diagnostic tool for me.

[Up1911Fan]

I just had an EPS Carry on a Macro start acting funky. I changed the battery and it started acting normal again. Checked the battery on our tester, and it showed discharged. The battery tester is an important diagnostic tool for me.

This. I added a good battery tester and green Wheeler bore sighter to my "red dot kit" a year or two ago. Both have been well worth it.

[rayrevolver]

Thread drift - what is a good battery tester? I can get one from Harbor Freight for $6. Is that good enough for these coin batteries?

I finally have a my Steyr slide back, with EPS mounted. But the cerakote I am assuming is thick enough that the barrel won't seat. So no rounds through the EPS yet. I am going to do some light sanding on the breach face and see if that's where my issue is.

[Up1911Fan]

Thread drift - what is a good battery tester? I can get one from Harbor Freight for $6. Is that good enough for these coin batteries?

I finally have a my Steyr slide back, with EPS mounted. But the cerakote I am assuming is thick enough that the barrel won't seat. So no rounds through the EPS yet. I am going to do some light sanding on the breach face and see if that's where my issue is.

I bought this one and have been happy with it.
https://www.amazon.com/ZTS-Multi-Battery-Tester-MBT-1/dp/B000FQG1XE/ref=sr_1_3_pp?crid=36M6I63WEYXHV&keywords=battery+tester&qid=1706207370&sprefix=battery+tester%2Caps%2C217&sr=8-3

[Basher]

How are these holding up and performing long-term compared to something like the 509T? I posted November of 2022 asking for some feedback when they were fairly new and have yet to acquire one, but I'm boxing up my G48 slide to send it off for a 407K/EPS Carry cut this weekend. I also have an M&P 2.0 CORE I need to get a plate for as well and I'm considering the full-size EPS. I'm not opposed to a 509T, but I have an astigmatism and find that I prefer the larger dots like the 6.5MOA in my RM07 over something smaller, but I want to venture into the closed-emitter world. Having tried a 508T which has the same reticle, I found the 2MOA dot a little too small for my liking, the 32MOA ring too broad, and both together was too cluttered. I'm adaptable and would get used to it but would really rather just get an EPS with the 6MOA dot if they're holding up well now that they've been out for awhile. Primary use would be AIWB carry and a monthly practice session of 100rnds with a match thrown in once in awhile to keep sharp with it. I see spotty reports of some QC issues which I expect from any company, so that doesn't worry me too much. Particularly those with higher round counts, I'd love some end-user feedback. Thanks!

[G19Fan]

How are these holding up and performing long-term compared to something like the 509T? I posted November of 2022 asking for some feedback when they were fairly new and have yet to acquire one, but I'm boxing up my G48 slide to send it off for a 407K/EPS Carry cut this weekend. I also have an M&P 2.0 CORE I need to get a plate for as well and I'm considering the full-size EPS. I'm not opposed to a 509T, but I have an astigmatism and find that I prefer the larger dots like the 6.5MOA in my RM07 over something smaller, but I want to venture into the closed-emitter world. Having tried a 508T which has the same reticle, I found the 2MOA dot a little too small for my liking, the 32MOA ring too broad, and both together was too cluttered. I'm adaptable and would get used to it but would really rather just get an EPS with the 6MOA dot if they're holding up well now that they've been out for awhile. Primary use would be AIWB carry and a monthly practice session of 100rnds with a match thrown in once in awhile to keep sharp with it. I see spotty reports of some QC issues which I expect from any company, so that doesn't worry me too much. Particularly those with higher round counts, I'd love some end-user feedback. Thanks!


Had a few issues with low serial # eps carry (under 30). It would.sometimes shift zero.a click or.two. That one went back.and was replaced.


That said I have more than a few.of these and over 15k+ on a single one. Also have 6k+ on a different one..no issues.

Biggest issue is 2x had the battery tray fly off on new units..but that was user error trusting factory loctite

[GJM]

I have a half dozen EPS (full size) 6 moa in use, with one on a G5 20 and another on an Sig X Ten. Have two EPS Carry. All are working great. I also heard of some issues with early Carry units. The full size came after the Carry, and it seems they worked the issues out by then.

I don't think the 2 moa red dot is bright enough on the 509T, although green is. I see two main reasons to use the 509T, you want to have a back up optic zeroed and ready to slap on a slide, or you want to use auto which the EPS full size six moa dot does not have. Auto doesn't work well enough for me with the two moa dot on the 509T, but circle only seems to work for me in auto.

[FreedomFries]

Maybe a little bit late, but if the Costa Ludus sights are 0.330" total height rear and shows the correct amount notch for you, then maybe you'd also be pleased with the 10-8 Performance Gen 2 rear sight that is almost the same at 0.325" total height combined with a Heinie plain black front sight. I have the 10-8 Gen 2 rear sight (0.325" total, 0.250" blade above the slide) on a 19.5 MOS with a 0.215" Heinie plain black front, and this combination works well for me with an FCD/TD ACRO plate and Steiner MPS. The fluorescent yellow front on those Costa Ludus sights would bug me too for BUIS. Also, "Costa Ludus" sounds really dorky with the name evoking gladiator training and their company logo based on retiarius gear.


I have been searching for the ideal plate and sight configuration for my G19.5 MOS and EPS for some time. I find myself constantly disappointed and wish I just sent a slide to be direct milled with a BUIS in front of the optic. May still do this...

For now, the Eleven-71 MOS/EPS plate is mounted on my slide. Incredible plate with incredible craftsmanship. I was previously using the Calculated Kinetics Dogtag plate but stripped and then sheared one of the screws when trying to remove the plate. That slide is now with a machinist friend who is trying to remove the broken off post.

I tried a set of Ameriglo GL-429 sights with Elven-71 and they were too tall. Took up about 1/3 of the optic window. I then tried a set of Ameriglo GL-455 3L sights (.260" Front & .335" Rear). These just barely cleared the deck of the optic body and didn't seem useable to me.

I had a set of Night Fision Costa Ludus sights in my parts box from a G26.5 MOS before it got a SCS. These sights provide an almost perfect lower 1/4 co-witness. The edge of the optic deck cuts the large yellow high-vis almost perfectly in half. Their website lists these as a 0.249" front and 0.330" height rear. So I really don't understand why these worked and the Ameriglo GL-453s didn't.

I tested the Costa Ludus sights in some different lighting conditions and they do seem overly bright in daylight. Not sure if I'm sold on them.

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I think I hate everything and should just order a bunch of Dawsons.

[OldRunner/CSAT Neighbor]

I bought this one and have been happy with it.
https://www.amazon.com/ZTS-Multi-Battery-Tester-MBT-1/dp/B000FQG1XE/ref=sr_1_3_pp?crid=36M6I63WEYXHV&keywords=battery+tester&qid=1706207370&sprefix=battery+tester%2Caps%2C217&sr=8-3

Have had that one since 2019 when GJM recommended it here, buy once cry once as Pat used to say.

[Chefdog]

I just purchased an EPS Carry 6 Red (the only enclosed mrds I’ve ever used) and have a question regarding the reticle. If I turn the brightness up indoors to the top 3 settings, which are, subjectively, too bright, I’ll see a lot reflection and 4 lines like hash marks at the 12, ,3, 6 & 9 o’clock positions starting at the edges and stopping before they touch the dot. If I transition out a window, or go outside to much brighter ambient lighting, it goes away. When the dot is adjusted to a more appropriate brightness for the ambient lighting indoors, it’s not noticeable. I’m wondering if this is normal or if I should call Holosun? I realize everyone’s vision impacts what they see, but I didn’t see this on the SCS, although the green 2moa dot looks terrible for my eyes, like 3-4 times larger and fuzzier than the 6moa red. Thanks for any input you can provide.

[joshs]

I just purchased an EPS Carry 6 Red (the only enclosed mrds I’ve ever used) and have a question regarding the reticle. If I turn the brightness up indoors to the top 3 settings, which are, subjectively, too bright, I’ll see a lot reflection and 4 lines like hash marks at the 12, ,3, 6 & 9 o’clock positions starting at the edges and stopping before they touch the dot. If I transition out a window, or go outside to much brighter ambient lighting, it goes away. When the dot is adjusted to a more appropriate brightness for the ambient lighting indoors, it’s not noticeable. I’m wondering if this is normal or if I should call Holosun? I realize everyone’s vision impacts what they see, but I didn’t see this on the SCS, although the green 2moa dot looks terrible for my eyes, like 3-4 times larger and fuzzier than the 6moa red. Thanks for any input you can provide.

The “starburst” from a too bright dot is totally normal (at least for my eyes).

[Chefdog]

The “starburst” from a too bright dot is totally normal (at least for my eyes).

Cool, thanks for the reply.
Just to clarify, I’m seeing the “starburst” as pixelated lines appearing to reflect off the housing edges of the lens, intensifying as the brightness increases. I always assumed when people used the term they were referring to the starburst originating from the dot projecting outward towards the housing.

[Noah]

Cool, thanks for the reply.
Just to clarify, I’m seeing the “starburst” as pixelated lines appearing to reflect off the housing edges of the lens, intensifying as the brightness increases. I always assumed when people used the term they were referring to the starburst originating from the dot projecting outward towards the housing.

Some light at the edges of the lens is normal when indoors at a very high brightness. Won't be a thing outdoors.

I'd consider on the top end of the spectrum of what starbursting is- IE, if I'm indoors and starting at a mid setting, dot looks good, a few clicks up and the dot has some bloom or Starburst, a few more clicks up and the dot is really blooming, max out the brightness and I'm seeing light at the edges of the window as well

[Chefdog]

Some light at the edges of the lens is normal when indoors at a very high brightness. Won't be a thing outdoors.

I'd consider on the top end of the spectrum of what starbursting is- IE, if I'm indoors and starting at a mid setting, dot looks good, a few clicks up and the dot has some bloom or Starburst, a few more clicks up and the dot is really blooming, max out the brightness and I'm seeing light at the edges of the window as well

Alright, thanks for the feedback, I appreciate it.

[Whiskey_Bravo]

Maybe a little bit late, but if the Costa Ludus sights are 0.330" total height rear and shows the correct amount notch for you, then maybe you'd also be pleased with the 10-8 Performance Gen 2 rear sight that is almost the same at 0.325" total height combined with a Heinie plain black front sight. I have the 10-8 Gen 2 rear sight (0.325" total, 0.250" blade above the slide) on a 19.5 MOS with a 0.215" Heinie plain black front, and this combination works well for me with an FCD/TD ACRO plate and Steiner MPS. The fluorescent yellow front on those Costa Ludus sights would bug me too for BUIS. Also, "Costa Ludus" sounds really dorky with the name evoking gladiator training and their company logo based on retiarius gear.

Hey good looking out man, thank you. I actually had that exact set of 10-8 sights in my parts box and it worked out perfectly. The front is a fiber optic sight, so I will be replacing that with Heinie as you mentioned in the near future.

The EPS mounted on an MOS Glock with an Eleven-71 Design plate will co-witness with standard height 10-8 Gen 2 Glock MOS BUIS. The ears of the rear sight just barely clear the deck of the optic, but it works. Probably close to a lower 1/5 co-witness.

[FreedomFries]

Hey good looking out man, thank you. I actually had that exact set of 10-8 sights in my parts box and it worked out perfectly. The front is a fiber optic sight, so I will be replacing that with Heinie as you mentioned in the near future.

The EPS mounted on an MOS Glock with an Eleven-71 Design plate will co-witness with standard height 10-8 Gen 2 Glock MOS BUIS. The ears of the rear sight just barely clear the deck of the optic, but it works. Probably close to a lower 1/5 co-witness.

Great! Now just have to figure out what height front to get. In the old days before optics, I would have to struggle to see where the .215, .235, and .250 front sights put the POI with the 10-8, Warren, or Heinie rear sights. Nowadays, I think I would just get .215 and call it good since it's a back up iron sight and a bit of six o'clock hold wouldn't bother me if it's used with an optic.

[Chefdog]

Great! Now just have to figure out what height front to get. In the old days before optics, I would have to struggle to see where the .215, .235, and .250 front sights put the POI with the 10-8, Warren, or Heinie rear sights. Nowadays, I think I would just get .215 and call it good since it's a back up iron sight and a bit of six o'clock hold wouldn't bother me if it's used with an optic.

I used a .215 Warren front w/ the 10-8 rear and it gives a good sight picture above the deck of the optic. I sighted it in yesterday and did try the irons @ 15 yards and didn’t have any problems with elevation within my normal level of accuracy. I like the 10-8 since it duplicates the shape of the Warren rear Ive used for years.
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[Blackbag]

Mounting Screw Question for an EPS Carry,

I am planing to mount an EPS Carry to an AIM Surplus directed milled 43X Slide. I am putting together an order with McMaster-Carr. I already plan to order the battery tray screw replacements, but I will need to order Mounting Screws for the EPS Carry as well. Does anyone know the screw size/part number for the appropriate mounting screws for a direct mill attachment (No plate, mounted directly to slide cut)?

Thank you everyone!

[Elwin]

Mounting Screw Question for an EPS Carry,

I am planing to mount an EPS Carry to an AIM Surplus directed milled 43X Slide. I am putting together an order with McMaster-Carr. I already plan to order the battery tray screw replacements, but I will need to order Mounting Screws for the EPS Carry as well. Does anyone know the screw size/part number for the appropriate mounting screws for a direct mill attachment (No plate, mounted directly to slide cut)?

Thank you everyone!

Having recently been there and done that with my own set of direct milled slides, you’ll want to check with AIM to make sure. There are a few possible options for what they could have used for thread pitch. If you didn’t get screws from them you may also ask about length. Be prepared to buy screws long from McMaster and trim to length for your slide and optic combo.

[Blackbag]

Having recently been there and done that with my own set of direct milled slides, you’ll want to check with AIM to make sure. There are a few possible options for what they could have used for thread pitch. If you didn’t get screws from them you may also ask about length. Be prepared to buy screws long from McMaster and trim to length for your slide and optic combo.

Thanks for the advice. I asked AIM already, and they didn't have an answer about the screw types and said to try the screws from Holosun. So, I figured I would ask here to see if anyone has ordered screws before. I guess I will try to figure it out somehow.

[Clusterfrack]

Thanks for the advice. I asked AIM already, and they didn't have an answer about the screw types and said to try the screws from Holosun. So, I figured I would ask here to see if anyone has ordered screws before. I guess I will try to figure it out somehow.

That’s unacceptable. They have to know what diameter and pitch they used to drill and tap.

[Noah]

That’s unacceptable. They have to know what diameter and pitch they used to drill and tap.

I'm sure AIM is just sourcing and badging these slides, for better or for worse.

[Clusterfrack]

I'm sure AIM is just sourcing and badging these slides, for better or for worse.

Ah. Makes sense. Sort of. I guess it’s off to Ace Hardware with slide in hand…

[Noah]

Ah. Makes sense. Sort of. I guess it’s off to Ace Hardware with slide in hand…

Like the AIM branded triggers that are actually Rise or something, I don't think AIM has any manufacturing capacity. I think they're just branding generic stuff. That said, AIM is local to me and an awesome place and I'd try any of their stuff that fit my needs, so their strategy is working haha

[Elwin]

Thanks for the advice. I asked AIM already, and they didn't have an answer about the screw types and said to try the screws from Holosun. So, I figured I would ask here to see if anyone has ordered screws before. I guess I will try to figure it out somehow.

That’s weird. SOMEONE tapped the holes in that slide, and knows what thread pitch they are. But it may be they’re tapped at whatever the Holosun screws are (6-32?) which would make sense.

[Blackbag]

That’s weird. SOMEONE tapped the holes in that slide, and knows what thread pitch they are. But it may be they’re tapped at whatever the Holosun screws are (6-32?) which would make sense.

I don’t have the slide in hand yet. When I get the slide, I will see if I can figure it out. Hopefully the unknown screws from AIM will work and if not, I will have a gunsmith diagnose it for me and get the proper screws. Might just be a matter of not getting the right person with the answer. I will try again, just didn’t know if someone hasn’t already dealt with these screws before.

[TOTS]

I just had an EPS Carry on a Macro start acting funky. I changed the battery and it started acting normal again. Checked the battery on our tester, and it showed discharged. The battery tester is an important diagnostic tool for me.
Question is really open to anyone- is a good electricians multimeter fine for a battery tester or does an actual tester apply a load or do something special when testing a battery?

[Clusterfrack]

Question is really open to anyone- is a good electricians multimeter fine for a battery tester or does an actual tester apply a load or do something special when testing a battery?

You can test voltage, but my understanding is a battery tester pulses current to estimate remaining capacity.

[GJM]

My EPS Carry dot started acting up this morning. I pulled the battery and tested it and it showed as nearly depleted. Replaced the battery and all is well. The battery tester sure pays for itself in my opinion.

[Kanye Wyoming]

One G19 has an EPS MRS green. I would shoot it every now and then with the 2MOA green dot. Didn’t perform for me nearly as well as 6MOA red dot on another G19.

I’d always thought of the circle as akin to training wheels, but I thought I recalled GJM saying at some point in the last year of so that he liked the 32MOA circle on the EPS, or maybe it was on another Holosun. Anyway, today I thought I’d try just the 32MOA green circle and compare to the 6MOA red dot. On Bill Drills (7 yds) and The Test (10 yds) my results were modestly but decidedly and consistently better with the green circle.

I figured things would fall apart at 25 yards (quick but untimed). But comparing the results of several targets for each, they didn’t. Again, modestly but decidedly and consistently better with the green circle. Weird, surprising, and a bit counterintuitive, but a data point.

[GJM]

One G19 has an EPS MRS green. I would shoot it every now and then with the 2MOA green dot. Didn’t perform for me nearly as well as 6MOA red dot on another G19.

I’d always thought of the circle as akin to training wheels, but I thought I recalled GJM saying at some point in the last year of so that he liked the 32MOA circle on the EPS, or maybe it was on another Holosun. Anyway, today I thought I’d try just the 32MOA green circle and compare to the 6MOA red dot. On Bill Drills (7 yds) and The Test (10 yds) my results were modestly but decidedly and consistently better with the green circle.

I figured things would fall apart at 25 yards (quick but untimed). But comparing the results of several targets for each, they didn’t. Again, modestly but decidedly and consistently better with the green circle. Weird, surprising, and a bit counterintuitive, but a data point.

In the last month, I posted this picture of a three round group shot with my rattler at 50 yards using a Holosun 507 in circle only mode.

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I don't see any difference in my groups with a circle versus a dot. I do find a dot easier to shot call with. The circle works great in low sun angles because it is not subject to splatter like a single small two moa dot.

On the 507K, which my wife runs in circle only mode on her 365 EDC, the circle eats batteries quite a bit faster than a single dot.

[G19Fan]

The circle def eats batteries faster

I have come to prefer for anything other than slowly shooting at 25 yards or more:

Circle and dot
Circle
Dot (6 moa)
Dot (2 moa)

Carry with circle and dot

[G19Fan]

My EPS Carry dot started acting up this morning. I pulled the battery and tested it and it showed as nearly depleted. Replaced the battery and all is well. The battery tester sure pays for itself in my opinion.

Whenever an eps carry or 507k had started acting up for me (can't adjust brightness usually) it has always been battery almost deleted and a new one has fixed it

[Biggy]

In the last month, I posted this picture of a three round group shot with my rattler at 50 yards using a Holosun 507 in circle only mode.

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I don't see any difference in my groups with a circle versus a dot. I do find a dot easier to shot call with. The circle works great in low sun angles because it is not subject to splatter like a single small two moa dot.

On the 507K, which my wife runs in circle only mode on her 365 EDC, the circle eats batteries quite a bit faster than a single dot.


Hey GJM, where is the thread with your posts where you were running a EPS on your P365, I can't find it. Are you still running the EPS on your P365 ?

[GJM]

Hey GJM, where is the thread with your posts where you were running a EPS on your P365, I can't find it. Are you still running the EPS on your P365 ?

Still running it and it works great, although it is larger than the EPS Carry.

https://pistol-forum.com/showthread.php?53497-New-365-looks-like!-P365x-

[DamonL]

Thanks for that. I ordered a carry model with free shipping for my 365XL just now. I would like to order more while they have them, but they are a little pricey for a Holosun that I am not sure I am going to like. Considering the regular EPS for my Staccato C2.

[G19Fan]

In the last month, I posted this picture of a three round group shot with my rattler at 50 yards using a Holosun 507 in circle only mode.

116807

I don't see any difference in my groups with a circle versus a dot. I do find a dot easier to shot call with. The circle works great in low sun angles because it is not subject to splatter like a single small two moa dot.

On the 507K, which my wife runs in circle only mode on her 365 EDC, the circle eats batteries quite a bit faster than a single dot.

I run an eps carry with circle dot for edc. I replace batteries every quarter

[JCS]

How does the carry work with suppressor height sights?

Thinking of putting one on my staccato p with the rmr adapter plate but wondering if the sights will be in the way of the window.

[crosseyedshooter]

How does the carry work with suppressor height sights?

Thinking of putting one on my staccato p with the rmr adapter plate but wondering if the sights will be in the way of the window.

When comparing direct-mount, the EPS window will obviously be lower and the sights will look taller. In your case of mounting on an RMR plate, here're the relevant dimensions:

RMR deck height is ~0.34"
EPS deck height is 0.25"
EPS to RMR adapter plate is 0.1"
EPS Carry to top of back up sights is ~0.300"

Basically, EPS deck height, with adapter plate, mounted onto an RMR cut will be within 0.01" of the RMR deck height. Relatively speaking, your sights will appear to be the same height above the deck of the optic.

ETA: I hope somebody checks my measurements just in case!

[heyyouduh]

Holosun EPS with DPP MOS adapter on a G45 slide with Dawson Precision MOS non co-witness sight set, 0.235" tall front and 0.225" tall rear sight. https://dawsonprecision.com/dawson-precision-glock-gen5-g17-g19-mos-fixed-non-co-witness-sight-set/

The sights are roughly lower 1/4. I need to zero both the EPS and the BUIS. Hopefully next week. We'll see how I like the BUIS'. They sit low in the window, yet still give me a good sight picture. The bottom 1/3rd of the rear notch is obstructed by the seal/ant of the rear lens of the EPS, but it still provides for a good sight picture.

For those interested, the EPS/DPP adapter put the rear deck of the EPS about 0.125" above the slide top. https://uploads.tapatalk-cdn.com/20230519/2c5195d0ed81df9481ca78e473fbfabf.jpg

Thanks for the informative post/pic. Anyone have this set up with the CHPWS plate instead of the DPP? I have a G19.5 MOS with a CHPWS (GL-EPS) adapter and the Holosun EPS. Trying to find sights similar to what your picture showed. Unsure of plate thickness differences between the CHPWS and DPP.

[heyyouduh]

As a follow up to my previous post above, I bought 2 CHPWS (GL-EPS) plates from a retail vendor. Both plates are not a tight fit on either of my G19.5 MOSs. both have slight front/back movement that is not acceptable to me as it would mean the plate/optic is only secured by the screws. They're going to be returned. I ordered the DPP ones from Amazon.

[Exiledviking]

As a follow up to my previous post above, I bought 2 CHPWS (GL-EPS) plates from a retail vendor. Both plates are not a tight fit on either of my G19.5 MOSs. both have slight front/back movement that is not acceptable to me as it would mean the plate/optic is only secured by the screws. They're going to be returned. I ordered the DPP ones from Amazon.

I was impressed with the fit and finish of the two DPP plates I received.

[heyyouduh]

I was impressed with the fit and finish of the two DPP plates I received.

Yea... I did read the issues with CHPWS but their site is informative and I asked them some questions and they were responsive... They're also in state from me so I wanted to give them a try. Ended up ordering from a retail vendor as that specific item was OOS on CHs site. Womp. should've gone with DPP or Calculated kinetics to begin with.

[heyyouduh]

I was impressed with the fit and finish of the two DPP plates I received.

My DPP plates received yesterday. Both easy drop in fit, does not fall with pistol upside down. Ordered the non co-witness Dawson sights based on the picture posted by Exiledviking.

[mastiffkb]

Great thread but I must admit that I did not read all 97 pages due to time constraints.

Looking to add an EPS Carry to a VP9 but am having trouble finding mounting plates.

I have found cphws and hkparts make a plate.

Any other companies producing a plate for the EPS carry/VP9?

TIA

[vcdgrips]

Took the advice of GJM when I was configuring an RDS G19 as I was looking to have a slightly more concealable EDC RDS pistol as I am back to a more tailored look with e end of summer

1. Gen5 Glock G19 MOS
2. DPP Plate
3. Holosun EPS 6 moa Red
4. Blue locktit 243 on the stick
5. Ameriglo 5353s
6. LTT grip plug

I had possession of the gun and gear by late July. It was fully 30 days before I could get the range for a zero session and a qual after installing everything.


The DPP plate “snapped” it very tightly. The supplied screws were pre loctitied and clearly marked as to location.
Torqued as per spec ( which for me is also good and tight with about a 1/10 more bearing down just a bit)
Did the same for the optic. Let everything dry over night.

So far so good. The Optic was about 8 clicks high and about 6 clicks right at 12.5 yrds. Certainly minute of man accurate from the box. I was zeroing in a very hot indoor range.

Got 5 shot groups out to 15 the were 4 touching and a flyer. Staying in the 8 ring out to 25. (That is me, not the gun/optic). Then just shot a total of 200ish rounds to evaluate the gun, mags and what will be magpul dedicated practice mags.


Qualed with it this past Fri 50 rounds. After the qual and another 100ish of practice, I had an ever so right bias poi. Put another click to the left and stacked rounds at 5 (1x) and 10 (2x) to the point I had a ragged hole. I will qual w it 1x more using duty ammo v the 124 Lawman FMJ, clean/lube it well and declare it EDC worthy. That is me being a little OCD. I strongly suspect that it is ready to go with Speer 124 Gold Dot as we speak.

The 6 moa dot is bigger without being too big. I find that with my astigmatism, if I am not corrected it seems to bloom a bit less that my 2 moa 507 on an Gen 3 G17 and my 3.25 Acro p2 on a Gen 3 G22.

I suspect that I will configure another just like it before the end of the year. Perhaps a brace of G45’s for 2025 with RDS TBD and I am done. (Well I am intrigued by the SA AOS 1911 single stack!)

[eb07]

Nice. I also appreciate the more understated branding on the sight instead of the screaming-in-your-face white used on other 407/507 models.

Easily fixed with some aluminum blue FYI

[Disciple]

Anyone know the width of the EPS carry vs. EPS? I’m considering for a G26.

Which one did you choose and how did that work out?

[Clusterfrack]

Which one did you choose and how did that work out?


Which one did you choose and how did that work out?

EPSc for the 26. EPS for a p07.

https://uploads.tapatalk-cdn.com/20240912/088a970fcbdcca24db4c7fc3deb0d5de.jpg
https://uploads.tapatalk-cdn.com/20240912/176094daa5e1778bbe8c96917696d536.jpg

[Disciple]

EPSc for the 26. EPS for a p07.

The EPSc sure is a good fit. How much do you notice the smaller window, and do you ever miss a standard rear sight?

[Clusterfrack]

The EPSc sure is a good fit. How much do you notice the smaller window, and do you ever miss a standard rear sight?

It’s a trade off. A bigger window is always better, so on a G19-17 size gun like the P07, there’s no reason not to use a full size EPS. But the G26 is already a compromise gun and the EPSc works perfectly. I’m always surprised how well that combo works. I don’t miss a rear BUIS at all, and wish the EPS had the built in sight.

[G19Fan]

The EPSc sure is a good fit. How much do you notice the smaller window, and do you ever miss a standard rear sight?

Imp the espc doesn't lose anything despite the smaller window.

I do carry and shoot a circle reticile though

[TicTacticalTimmy]

I was at the range practicing with my P-01 equipped with an EPSc. At some point in the middle of a string the dot simply wasn't there. I took a close look and noticed the battery tray was missing. The screw had backed out and the whole thing went flying off during recoil. I was able to find the tray and battery, but could not recover the tiny screw, deadlining the gun until I could get a new one. I did finish out the day practicing with my BUIS, pleasantly surprised at how decent I was with them.

I called Holosun, an American picked up the phone which was pretty cool. He said I should have used loctite on the screw, did not have a torque spec. Told me to send an email with the issue and they would get me squared away with a new battery tray. I specifically asked for a second new screw so I would have a backup if this happened again.
I got a new battery tray in the mail with a screw, but not the 2nd screw I asked for. It took over a month to get the new battery tray in my hands, IMO a pretty bad downtime for something so simple. I did contact them after a couple weeks and they said the parts were backordered, so perhaps they normally would send these out more quickly.

The EPS and EPSc are still my favorite pistol optics, but this weakpoint does give me some pause. Consider this post a PSA to check your battery tray screw tightness and add loctite as needed. I put a witness mark on the battery tray screw after tightening it down.

I wish they just did a bottom loading CR2032. I imagine they could get 5-10yrs of battery life out of one.

I haven't skimmed through this 98 page thread so not sure if this has already been talked about (I'm sure it has).

[vandal]

Or a side loading 1632, like the Romeo X Compact Enclosed has.



I wish they just did a bottom loading CR2032.

[G19Fan]

My training eps carry was about 2 inch high at 25 yards yesterday.

Dialed it back down and it has been fine. Shift was after about 36kor so rounds so not upset.

I don't witness mark my training guns

[G19Fan]

Eps carry still my favorite small optic

509T my favorite bit optic. Have a 509T on 36k rounds lifetime too but it doesn't really get shot anymore. Never shifted zero

[RJ]

I haven't skimmed through this 98 page thread so not sure if this has already been talked about (I'm sure it has).

It has, but it's a good reminder.

Somewhere along the line someone posted a torque value for the battery tray screw (5 in lbs), so I put that on the B side of the latest release of all the QRCs for the 12 EPS/EPCs optics.

123858

[JCS]

I’m wanting to put an EPS on a Staccato. I already have a rmr plate on it. Should I get a dedicated plate for the EPS or use the adapter plate?

[GJM]

I’m wanting to put an EPS on a Staccato. I already have a rmr plate on it. Should I get a dedicated plate for the EPS or use the adapter plate?

Normally I would say get the dedicated plate but a possible issue is BUIS height, which if RMR height might obscure more of the display than ideal. In this case, extra thickness from the additional plate might better position the EPS. This is all theoretical and not Staccato plate specific.

PS: since you have the RMR plate you might try that first and then decide.

[D-der]

Any thoughts on a 6moa dot EPS carry vs Romeo X for daily carry on a 365XL / Macro ? I've had good luck with 407 / 507K' s and the couple of times I've had a problem with any Holoson the CS was actually pretty impressive.

[MVS]

I was at the range practicing with my P-01 equipped with an EPSc. At some point in the middle of a string the dot simply wasn't there. I took a close look and noticed the battery tray was missing. The screw had backed out and the whole thing went flying off during recoil. I was able to find the tray and battery, but could not recover the tiny screw, deadlining the gun until I could get a new one. I did finish out the day practicing with my BUIS, pleasantly surprised at how decent I was with them.

I called Holosun, an American picked up the phone which was pretty cool. He said I should have used loctite on the screw, did not have a torque spec. Told me to send an email with the issue and they would get me squared away with a new battery tray. I specifically asked for a second new screw so I would have a backup if this happened again.
I got a new battery tray in the mail with a screw, but not the 2nd screw I asked for. It took over a month to get the new battery tray in my hands, IMO a pretty bad downtime for something so simple. I did contact them after a couple weeks and they said the parts were backordered, so perhaps they normally would send these out more quickly.

The EPS and EPSc are still my favorite pistol optics, but this weakpoint does give me some pause. Consider this post a PSA to check your battery tray screw tightness and add loctite as needed. I put a witness mark on the battery tray screw after tightening it down.

I wish they just did a bottom loading CR2032. I imagine they could get 5-10yrs of battery life out of one.

I haven't skimmed through this 98 page thread so not sure if this has already been talked about (I'm sure it has).

I had a bad day for a number of reasons but this just added to it. Doing a 3R3 at 25 with my 365 Legion and EPS carry. During the reload I see something fly in front of my face, back on target I have no dot. Yep, what I saw flying was the battery and tray. I found them but not the screw. When I got home and tried to put a new screw in I found that it had not come loose but stripped out in the housing itself. A real bummer.

[Clusterfrack]

I haven't lost a battery tray screw, but always have spares just in case.

EPS battery tray screw M2.5x0.45x5mm
https://www.mcmaster.com/catalog/129/3435/91698A241

[GJM]

I haven't lost a battery tray screw, but always have spares just in case.

EPS battery tray screw M2.5x0.45x5mm
https://www.mcmaster.com/catalog/129/3435/91698A241

I bought spares, and that probably warded off losing one, so I just bought some more as insurance. Aren’t they like $10 a pop, or something ridiculous, if you buy them individually?

[MVS]

I haven't lost a battery tray screw, but always have spares just in case.

EPS battery tray screw M2.5x0.45x5mm
https://www.mcmaster.com/catalog/129/3435/91698A241

I bought a box of those when I bought a box of the mounting screws. That is why I wasn't too concerned when it happened at the range. I was quite surprised when I got home and found that it was not the screw that was the problem.

[Tokarev]

This is an option for the battery tray screw:

https://tacrig.com/product/holosun-eps-eps-carry-battery-tray-screw/

You'd think Holosun would have screws and battery trays for sale on the website. It would make everything easier for us.





Sent from my SM-S901U using Tapatalk

[HeavyDuty]

Has anyone subjected an EPS to shotgun mounting?

[JCS]

Eps carry still my favorite small optic

509T my favorite bit optic. Have a 509T on 36k rounds lifetime too but it doesn't really get shot anymore. Never shifted zero

Do you prefer the 509t to EPS full size? If so, why?

[GJM]

Has anyone subjected an EPS to shotgun mounting?

Not on a shotgun, but on multiple 10mm pistols. I bet a reciprocating 10mm slide is rougher than fixing a shotgun?


Do you prefer the 509t to EPS full size? If so, why?

I like both optics, but prefer the EPS for a 6 moa dot, a more compact size and a lower deck height that plays with lower BUIS.

[Clusterfrack]

Do you prefer the 509t to EPS full size? If so, why?

Like G19Fan, these are my two favorite pistol optics. The EPS is slightly better suited to concealed carry and the 509 is more rugged and has a better mounting system (when direct milled). I have had zero problems with any of mine.

If the 509 came with a dot-only reticle, I'd prefer that.

[JCS]

Not on a shotgun, but on multiple 10mm pistols. I bet a reciprocating 10mm slide is rougher than fixing a shotgun?



I like both optics, but prefer the EPS for a 6 moa dot, a more compact size and a lower deck height that plays with lower BUIS.

I’ve shot mostly 5 moa SRO in my comp guns and don’t really like small dots. I think I’ll end up with the EPS because of the bigger dot.

[G19Fan]

Do you prefer the 509t to EPS full size? If so, why?

I prefer the 509T primarily because of the mounting. Imo I think a 509T is also more robust as I have never had one lose zero. My highest round count one is past 50k now.

I have had multiple eps carry and eps lose zero (minor adjustment shift) after 30k rounds (my training gun's eps carry). Rezero fixes it and they hold it fine. That is more than acceptable to me for a ccw optic.

That said I am all in on p365s so I really only have the one 509T on a legacy g19.

Going forward all optics will be eps carry. The large eps has a nice larger window but I like keeping everything consistent.

Circle reticule eps carry or 509T. I sometimes get tempted to try a 6 moa dot lol. I feel like I am the only person carrying and competing with circle only reticule, but it works well for me.

[JCS]

Ok I know I can’t be the only one who has encountered this and forgive me if it’s been discussed.

But how are yall getting a torque wrench on the optic screws. The housing interferes with fix it sticks and wheeler torque wrench.

126197

[WDR]

You should be able to find a longer torx bit.

[crosseyedshooter]

Ok I know I can’t be the only one who has encountered this and forgive me if it’s been discussed.

But how are yall getting a torque wrench on the optic screws. The housing interferes with fix it sticks and wheeler torque wrench.

2-inch bit works for me but I still protect the rear window with masking tape when tightening.

126198

[GJM]

Ok I know I can’t be the only one who has encountered this and forgive me if it’s been discussed.

But how are yall getting a torque wrench on the optic screws. The housing interferes with fix it sticks and wheeler torque wrench.

126197

I like using the Holosun T10 -- it fits without interference and keeps you from over torquing the screw.

[TAZ]

Ok I know I can’t be the only one who has encountered this and forgive me if it’s been discussed.

But how are yall getting a torque wrench on the optic screws. The housing interferes with fix it sticks and wheeler torque wrench.

126197

Amazon is your friend.

126202

[Tokarev]

2-inch bit works for me but I still protect the rear window with masking tape when tightening.

The tape is a good idea.

Here's a more "professional" solution. And a more expensive one.

https://impactcncmachine.com/icm-optic-install-kit/

[JA556]

Installed EPS on a DPP titanium plate. Used the DPP supplied screw for the EPS optic. Would the Holosun supplied optic screws have been better?
-------------

Somehow, something got screwed up and this is my (GJM) response to your question.

DPP includes screws (with a spare) for attaching the plate to the slide and the optic to the plate. They are the right screws for their plate. The EPS comes with different size screws for attaching the optic to a direct milled style pocket. What is your concern with the DPP screws? I have over six plates on MOS pistols in use with EPS full size optics and have yet to have a problem.

[UpDok]

I sent out my G19 Gen 5 slide out to get milled for a Holosun EPS (full size) and it came out really well. The EPS sits nice and low in the slide. The milling is a nice snug fit. I can't get a piece of typing paper between the front & back of the optic and the slide. I like the Glock nDLC slide finish so I did not opt for the nitride coating.

The irons are XS "minimalist" standard height G19/G17 with tritium front, plain rear.

Battle Werx in Connecticut did a very skillful machining job with my project!

Green 6 MOA EPS over the front.


[ATTACH=CONFIG]126760


[ATTACH=CONFIG]126759

[rayrevolver]

Amazon is your friend.

126202

The 150mm length bits are down to $9.99. I bought a set, thanks!