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Thread: Glock MOS sight height lower 1/3 co-witness

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  1. #1
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    Glock MOS sight height lower 1/3 co-witness

    I don't want the rear sight up in the middle of my view. Prefer to be lower 1/3 like my M&P's are with rear sight in front of the RMR.

    This a first for me, rear sight then RMR, don't want to confuse myself. I will use Ameriglo black on black sights.

    Thanks
    Last edited by RWH24; 09-27-19 at 14:59.
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    I'm in the same boat: trying to find the correct information and buy once and then pass the correct information onto my guys.

    I do know that it depends on which plate you're using as different companies have different thickness of their plates.

    For me specifically, I'm going to be using a CHPWS plate and have been searching for the straight dope on what height Ameriglo blacked-out sights (or model) give me 1/3 co-witness.

    Following...

  3. #3
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    I'm setting up a gen 5 G19 MOS with Holosun 507C and plate from CHPWS and have been looking for this information as well. Someone on TOS said they were using the Ameriglo GL-429 sights so that's what I'm trying out. Unfortunately UPS could not be bothered to deliver my optic yesterday so I couldn't get it all put together yet. Hopefully Monday I'll be able to tell you for sure if this combination works out.
    Steve

    Disclaimer: I am employed by Shadow Systems. My posts on this site are my own and do not necessarily reflect the views of my employer.

  4. #4
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    I too have the CHPv3 plate on my MOS slide. I used the Trijicon MOS HD/XR sights at first, but I found the deal on an RMR.
    The distance from the slide to top of RMR at rear is .250" ish. About the same height as the HD/XR MOS rear sight, actually .231".

    Looking at Ameriglo single sights, Frt black and Rear black, A .315/.330/.350 front??
    Rear .360/.394??



    A .394" rear will pace the top of the sight well above the back of the RMR with the C&H plate. The bottom of the notch will be ?? IDK

    I'm not machinist precise with a caliper. Close counts like Horseshoes and hand grenades.
    Last edited by RWH24; 09-28-19 at 16:12.
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    Check out 10-8 performance. I put a set of their mos sights on my 34 and their right at the bottom of the rmr. Ended up with a .315 front for a perfect match.

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    Quote Originally Posted by mfbpt View Post
    Check out 10-8 performance. I put a set of their mos sights on my 34 and their right at the bottom of the rmr. Ended up with a .315 front for a perfect match.
    Was this on a mos or milled?


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  7. #7
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    https://dawsonprecision.com/dawson-p...ed-dot-scopes/

    Call and ask if you want 1/3


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  8. #8
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    Quote Originally Posted by jpmuscle View Post
    https://dawsonprecision.com/dawson-p...ed-dot-scopes/

    Call and ask if you want 1/3


    Sent from my iPhone using Tapatalk
    That has a very narrow notch, .125. IIRC Ameriglo is .150 and frt sight is .090 wide
    Thanks for the info
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  10. #10
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    I think I am going to sell my G45/19 MOS and pay to have my other G45 milled for an RMR. Get #dougified at #ateiguns

    Use the shorter Ameriglo Black on Black .315 frt and .394 rear. AND GET the rear sight dovetail cut in front of the RMR like my M&P9 1.0
    POW-MIA, #22untilnone
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