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Glock MOS Rear Sight, Standard Height

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  • Mounted on standard slide.
  • Mounted on MOS slide.
  • Note that the MOS dovetail (L) is the same size as the normal one (R), but is pushed farther to the rear.
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Calculated at checkout

Product Description

A standard height (.325" overall height, .250" above the slide, same as our standard Glock rear sight) rear sight designed to fit into the Glock MOS rear dovetail without interfering with the adapter plate. This sight is compatible with our normal .215"-.250" tall Glock front sights. Please note that this rear sight setup will not be tall enough to cowitness with an optic in place. The idea is to allow you to take advantage of your MOS slide's features, but without the headache of tall sights dragging on holsters or being too high above a slick slide. Will also fit on all Glock slides without MOS plate.

**This is our recommended rear sight for the Glock 48, in conjunction with our .250" height Glock front sight.**

  • Notch widths: .140" and .156" U Notch
    • .140" - good balance of speed and accuracy
    • .156" - good for maximum speed, preferred for older eyes 
  • Compatible with .215" - .250" tall front sights (see below for more info)
    • Our rear sight is .250” net blade height above the slide
    • Use a notch width equal to or greater than front sight width.
    • NOT compatible in elevation with the Glock OEM, Trijicon OEM style, TruDot, Meprolight, TruGlo TFO front sights as they are too low.
    • XS Standard Dot front sights are .200" tall.  Our .156" notch rear is recommended, but we do not guarantee POA/POI due to the short height.
    • XS Big Dot front sight is .195" wide, and is too wide to work with any our sights.
    • Trijicon HD, GL101 Series front sight is .215" tall x .144" wide.  Our .156" notch rear is compatible.

User installation instructions included. Fitting is usually not required, but the QPQ/Melonite finish is harder than a normal steel file. It needs to be filed with a diamond file or hone (see Brownells.com), as files will slide right off the surface.

***Some newer production Gen5 guns may have oversized rear sight dovetails. If you experience excessively loose fit of our rear sight, please contact us for a return. Our sights are all the same size, so we are unable to provide you with a larger one.

Finished in black QPQ salt bath nitrocarburizing (aka Melonite, same as the Glock slide), includes set screw and wrench.

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Product Reviews

  1. Glock 48 MOS and front sight solution 5 Star Review

    Posted by on 26th Sep 2019

    Looking for a set of sights for my Glock 48. It will be my primary off-duty carry gun and I was quite happy with the 10-8 sights I use on my Glock 35. There is some issue about what sights will have the correct impact (elevation) as a lot of people are using sights for the 42/43. 10-8 specifically recommends the MOS and front sight combos as addressing the longer sight radius of the 48. The install was a snap, rear sight was snug but easily installed with a derlin punch. Sight picture is excellent. Very happy and will continue to use 10-8 sights when buying Glocks and replacing the plastic sights.

  2. Need a low cowitness sight with 10-8 quality? Buy this! 5 Star Review

    Posted by on 26th Jul 2019

    So I needed some back up irons for my ATEI milled glock 19 with RMR and BattleWerx sealing plate. Some research pointed me in the direction of Dawson Precision's .245 MOS rear. The Dawson is a great sight but its way too low of a cowitness coupled with the RMR and sealing plate, as the plate adds a bit of height to the RMR. Enter the 10-8 rear! The 10-8 sight measures .250, has a perfect u-notch, and serrations to cut glare. After getting it all setup, it sits at the perfect height for my current setup: as low as it gets without the sights being unusable as backups.

  3. STD HT Glock MOS rear 5 Star Review

    Posted by on 20th May 2019

    If you’ve ever needed a rear sight for your MOS Glock but don’t need the suppressor/RMR co-witness height... Go ahead and hit that add-to-cart button. Ladies, gentlemen, attack helicopters... this rear is as good as it gets. You won’t be disappointed.

  4. High quality solution 5 Star Review

    Posted by on 1st Dec 2018

    Got this to pair with a .115 fiber optic front & the .140 U notch is perfect for my 17 MOS without overhang on the rear of the slide. Typical 10-8 quality and required no fitting. Very satisfied.

  5. best rear sight I have found 5 Star Review

    Posted by on 18th Aug 2018

    I love the simplicity, it's easy to see, durable. Everything a sight should be. I have one on my Glock 21, just ordered another for my Glock 17, neither are MOS guns but this sight still works great.

  6. A much needed product 5 Star Review

    Posted by on 2nd Jul 2017

    For those who want the MOS option but also want a high quality U notch rear sight that does not have to be removed to exercise the MOS option. Very happy with this sight.

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