Will these work on the 407k/507k and 507 Comp as well?Originally Posted by Clusterfrack
Will these work on the 407k/507k and 507 Comp as well?
Likes pretty much everything in every caliber.
I don't have that optic...
“There is no growth in the comfort zone.”--Jocko Willink
"You can never have too many knives." --Joe Ambercrombie
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
Likes pretty much everything in every caliber.
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.
Likes pretty much everything in every caliber.
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
“There is no growth in the comfort zone.”--Jocko Willink
"You can never have too many knives." --Joe Ambercrombie
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.
I think I hate everything and should just order a bunch of Dawsons.
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.
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.
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-e...acement-screw/
They list the size as: M2.5 x 0.45mm x 4mm FLAT HEAD SCREW (PHILLIPS DRIVE)
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.
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