Which Generation of Glock to convert to RDS

[DacoRoman]

Howdy..so I'm looking at going RDS.

I've got a 509T coming in. I'm considering getting a 508T too.

I've got a Gen3 G17 and a Gen4 G17. I also have two Gen3 G19's but they have nice Austrian proof marks, and call me sentimental, but I wouldn't mill those..I'd end up buying another slide for a G19. I also have a G26 but I don't think I'd go RDS with that at that point.

But, my question is:
- should I be looking to go Gen3 for RDS, Gen4...or sell/trade my way into a Gen5 first, that I'll then RDS.

I'll also add that:
- the Gen3 frames fit me very well, and I generally don't have any issues with the Gen3 guns.
- I do have a Wilson drop in Match barrel in the Gen 3 G17 that shoots with good precision for me, so I think an RDS would be a good addition to this gun, unless I'm making a mistake sticking with Gen3 for some reason that I can't envisage.
- I won a walk back competition/drill, in a John "Shrek" McPhee class, with the Gen4 G17, with the last winning shots out to about 105 yards so that Gen4 is a good shooter too (incidentally I beat two shooters that had RDS's on their Glocks, but this was around 4 years ago and my vision has taken a noticeable nose dive since then - hence my wanting to go RDS, partly).

I mention the last points regarding precision only because I am thinking of RDS'ing a gun that does have very good precision potential, and I wonder how much more precision potential a Gen 5 might have compared to my Gen3 and 4 G17's.

I also wonder about the Gen4 and Gen5's being flatter shooting, but I'm not sure I've noticed a difference between my Gen3 and Gen4 G17..

So overall, which platform would benefit most from the RDS treatment, do y'all think?

[GJM]

Gen 5 with the breach face cut so it bucks the brass so far they won't bounce off your optic and scratch the front lens.

[DacoRoman]

Gen 5 with the breach face cut so it bucks the brass so far they won't bounce off your optic and scratch the front lens.

Well there’s a consideration I hadn’t thought of. Do Gen3 and 4’s commonly eject into the glass ?

Which iteration of the Gen5 Glocks have the breech face cut in the correct fashion? Or is it an aftermarket mod?

[JSGlock34]

Well there’s a consideration I hadn’t thought of. Do Gen3 and 4’s commonly eject into the glass ?

Which iteration of the Gen5 Glocks have the breech face cut in the correct fashion? Or is it an aftermarket mod?

Any GEN5 with front cocking serrations should also have the breech face cut. It was a rolling change from the factory.

[HeavyDuty]

For a first RDS Glock, I’d definitely go Gen5 MOS for simplicity. In fact, I did!

[Wake27]

I’m a firm believer that everyone needs to give the Gen 5 Glock a solid look, whether they’re looking for their pistol number one or one hundred.


Sent from my iPhone using Tapatalk

[DacoRoman]

OK! I'll consider selling my Gen4 G17 to get into a Gen5 G17...or maybe a G45, does the G45 have the correct breach face as well?

Thinking laterally for a sec., do any of you know if the SS MR920 have an optimized breach face? For that matter how about Primary Machine or Agency Arms slides for the Gen 3 or 4, do they have the correct breach face?

[HeavyDuty]

OK! I'll consider selling my Gen4 G17 to get into a Gen5 G17...or maybe a G45, does the G45 have the correct breach face as well?

Current G45s have it, too. IMO a 45 MOS with your RDS of choice would be a great choice. I’ve actually considered getting one and using it with an ACRO.

[Adam]

If sticking with Glock, another +1 for a Gen5 MOS. Is MOS better than a slide milled specifically for your optic? No. But it is a very good modular system for deciding if we're about That Dot Lyfe IMO, which is exactly what I've used it for.


Gen5 MOS 19, 17, 45, whichever you prefer
Forward Controls Design or CHPWS (in my order of preference) plate to replace the factory Glock plate
Holosun 507/508 using the most common (RMR) footprint to get your feet wet with the RDS


I think you could do a lot worse than starting with that system. Then mill one of your guns for the 509 if you think you really like it.

[DacoRoman]

Current G45s have it, too. IMO a 45 MOS with your RDS of choice would be a great choice. I’ve actually considered getting one and using it with an ACRO.


If sticking with Glock, another +1 for a Gen5 MOS. Is MOS better than a slide milled specifically for your optic? No. But it is a very good modular system for deciding if we're about That Dot Lyfe IMO, which is exactly what I've used it for.


Gen5 MOS 19, 17, 45, whichever you prefer
Forward Controls Design or CHPWS (in my order of preference) plate to replace the factory Glock plate
Holosun 507/508 using the most common (RMR) footprint to get your feet wet with the RDS


I think you could do a lot worse than starting with that system. Then mill one of your guns for the 509 if you think you really like it.

Can one mill into the MOS cutout you make it more optimal/deeper? Or is the Glock cutout satisfactory and it’s only their plate that sucks ?

The way my vision is going I think I’ll pretty much have to make an RDS work and I hate to spin my wheels too much with a high mounted optic that makes me dislike the RDS or screw up make me start out with a presentation that needs to be tweaked later (although this latter concern may be OCD paranoia ;) ).

I find myself wondering again if an aftermarket slide may be the better way to go, assuming that they too would alleviate brass to the optic.. which maybe they won’t. Or an MR920..

But great points everyone, thanks!

[HeavyDuty]

Can one mill into the MOS cutout you make it more optimal/deeper? Or is the Glock cutout satisfactory and it’s only their plate that sucks ?

The way my vision is going I think I’ll pretty much have to make an RDS work and I hate to spin my wheels too much with a high mounted optic that makes me dislike the RDS or screw up make me start out with a presentation that needs to be tweaked later (although this latter concern may be OCD paranoia ;) ).

I find myself wondering again if an aftermarket slide may be the better way to go, assuming that they too would alleviate brass to the optic.. which maybe they won’t. Or an MR920..

But great points everyone, thanks!

An aftermarket slide is definitely an option. I don’t believe MOS can be milled deeper (not sure, though), I would start with a non-MOS slide to get maximum flexibility. Maybe one of the premilled Brownells slides?

[professor]

Can one mill into the MOS cutout you make it more optimal/deeper? Or is the Glock cutout satisfactory and it’s only their plate that sucks ?

The way my vision is going I think I’ll pretty much have to make an RDS work and I hate to spin my wheels too much with a high mounted optic that makes me dislike the RDS or screw up make me start out with a presentation that needs to be tweaked later (although this latter concern may be OCD paranoia ;) ).

I find myself wondering again if an aftermarket slide may be the better way to go, assuming that they too would alleviate brass to the optic.. which maybe they won’t. Or an MR920..

But great points everyone, thanks!

With your 509T, a milled slide is a much better setup in my opinion. No, you can’t mill a MOS gun for a 509T. And the 509T would be the only slide that fits that pattern.

This is the 509T on a MOS gun using the Glock MOS plate and Holosun adapter.

https://uploads.tapatalk-cdn.com/20210514/e6481b34726108a7435651e56c475100.jpg


The gun on the left is using a C&H 509T to MOS adapter. (The one on the right has a Forward control designs RMR to MOS adapter) This is a better option than the factory MOS/Holosun adapter. But the direct mill would be a better choice. I have one at Jagerwerks to be milled now.



https://uploads.tapatalk-cdn.com/20210514/ae7e4ca506f05b2870ff70e53d3e5d63.jpg

[DacoRoman]

An aftermarket slide is definitely an option. I don’t believe MOS can be milled deeper (not sure, though), I would start with a non-MOS slide to get maximum flexibility. Maybe one of the premilled Brownells slides?

I am even prepared to go more Gucci and was thinking of Agency Arms or maybe Primary Machine but the Brownells Route seems like a solid and more economical choice so I am considering that too potentially.

The issue of brass ejected into the optic doesn’t seem to come up during aftermarket slide discussions which is interesting. Could it be that they are less susceptible to this compared to stock Gen3 and Gen4 Glocks? I don’t know. I may start another thread asking people with aftermarket slides if they have such an issue at all.

I am also considering the fact that if I just wanted front serrations, getting a whole Gen5 Glock and sending it in for a simple mill job will be around a similar price for merely getting a stripped slide from Agency, albeit a pretty posh one with the cool serrations and lightening cuts. I’m not even sure how necessary lightening cuts are in fact.

Lots to learn about and consider apparently!

[DacoRoman]

With your 509T, a milled slide is a much better setup in my opinion. No, you can’t mill a MOS gun for a 509T. And the 509T would be the only slide that fits that pattern.

This is the 509T on a MOS gun using the Glock MOS plate and Holosun adapter.

https://uploads.tapatalk-cdn.com/20210514/e6481b34726108a7435651e56c475100.jpg


The gun on the left is using a C&H 509T to MOS adapter. (The one on the right has a Forward control designs RMR to MOS adapter) This is a better option than the factory MOS/Holosun adapter. But the direct mill would be a better choice. I have one at Jagerwerks to be milled now.



https://uploads.tapatalk-cdn.com/20210514/ae7e4ca506f05b2870ff70e53d3e5d63.jpg

What a difference.. thanks for those very informative photos! Is the top left 509T mil done by jagerwerks ?

[professor]

What a difference.. thanks for those very informative photos! Is the top left 509T mil done by jagerwerks ?

Yes, it was a picture that I snapped off Jagerwerks Facebook page.

[EPF]

Can one mill into the MOS cutout you make it more optimal/deeper? !

I haven’t done it myself so I can’t say for sure, but MOS milling appears as an option in the Jagerwerks drop down list for models.

https://jagerwerks.com/holosun-509t-for-glock/

[professor]

I am also considering the fact that if I just wanted front serrations, getting a whole Gen5 Glock and sending it in for a simple mill job will be around a similar price for merely getting a stripped slide from Agency, albeit a pretty posh one with the cool serrations and lightening cuts.


Loaded OEM slides are going for crazy numbers right now. I originally was just going to pick up a non-MOS slide for my 45 MOS.
Instead I picked up new blue label (with a GSSF coupon) gun for less than slides were on eBay. I grabbed a 19 so I’d have a frame to swap it with if I felt I needed a bit less grip to conceal. Or I could just sell the frame on gunbroker.

[DacoRoman]

I haven’t done it myself so I can’t say for sure, but MOS milling appears as an option in the Jagerwerks drop down list for models.

https://jagerwerks.com/holosun-509t-for-glock/

Yeah I see it in the options! Good to know!

[DacoRoman]

Loaded OEM slides are going for crazy numbers right now. I originally was just going to pick up a non-MOS slide for my 45 MOS.
Instead I picked up new blue label (with a GSSF coupon) gun for less than slides were on eBay. I grabbed a 19 so I’d have a frame to swap it with if I felt I needed a bit less grip to conceal. Or I could just sell the frame on gunbroker.

That’s wild! And that’s a good set up. Will you get the 19 rds’ed too?

I fell off the pistol shooting bandwagon several years ago and I find myself with older Gen Glocks: two gen3 19’s, one for carry and one for high round counts, a Gen3G17 w Wilson barrel for competition, and a gen4 g17 w green OD frame just for fun. I have an OD G26 too that I ended up carrying a lot. Surprisingly because of the breech face issue, the significance of which I’m not ultimately sure of, but it makes sense to want ejection that clears the optic, I find myself disinclined to send a gen3 or 4 for milling.

So it looks like I’ll have to trade into a pair of Gen 5’s maybe... and then send them for slide work.. or go for a wanton act of consumerism and get an already converted Agency Gen5 Glock for like $2500, but I’d be afraid it’s one with the old breech face cut :D !

I may in fact just wait, this is getting too complicated :D .. or just send one of my Gen3s in for milling and take a chance on brass to the optic... I mean it’ll only be a Holosun :D.. or is there a gunsmith that will reprofile my breech? Maybe even Glock? Just thinking out loud ova here.