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Glock Rear Sight

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Calculated at checkout

Product Description

The 10-8 Performance rear sight is precision CNC machined from heat treated 4140 bar stock and finished in black QPQ salt bath nitrocarburizing (aka Melonite, same as the Glock slide). All 10-8 sights feature a U notch for rapid, intuitive alignment with dot such as on our tritium insert, brass bead, and fiber optic front sights. The rear face is plain black, serrated at 40 lpi to reduce glare in varied lighting conditions.  

  • Fits: ALL Glock models, all calibers, all frame sizes, all slide sizes.  
    • most Glock models, including large frame 20/21 most commonly use the .215" front.  
    • Glock 34/35, 41, 17L, 24L most commonly uses the .235" front.  Sights do not overhang slide cutout.
    • Glock 42 is the only model with a unique slide, and our normal sights are a bit wide.  Stand by for updates.
  • 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.
    • Trijicon HD, GL101 Series front sight is .215" tall x .144" wide.  Our .156" notch rear is compatible.

User installation instructions included.

Please contact us for a discounted price on additional front sights if your initial purchase does not provide the desired point of impact.


Read our article about selecting sights.

Product Videos

Glock Sight Install (04:24)
10-8 Performance Glock Sight Installation
  • Glock Sight In...
    10-8 Performance Glock Sight Installation
  • Fiber Optic In...

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Product Reviews

Showing reviews 1-10 of 61 | Next

  1. Excellent sight 5 Star Review

    Posted by on 26th Mar 2015

    Excellent quality sight. Fit and finish are great. Easily installed, however did need to use a non-standard sight tool on the Glock, as it was slightly too tall for the factory Glock sight tool.

  2. Glock rear sight 5 Star Review

    Posted by on 24th Mar 2015

    Love these sights. Perfect combo with the brass bead front. Easy to install. Highly recommended

  3. Great sight for aging eyes 5 Star Review

    Posted by on 10th Feb 2015

    At 51, it is hard at times to get a quality sight picture. My eyes are not what they were, but the combination of 10-8's .156 rear sight and .235 front for my Glock 34 is a winning combination! the front sight pops! now, and the U shaped rear draws your eye right to the front sight for quick, accurate sight alignment!

    You can't go wrong with 10-8 sights!

  4. the best sites I have ever had 5 Star Review

    Posted by on 10th Feb 2015

    I like the u shape for the rear I have no trouble with them at all I would highly recommend this sight to everyone

  5. perfect for me 5 Star Review

    Posted by on 21st Nov 2014

    Being that I'm 51 and eye sight is so so I read a lot of the reviews and decided to go with the 156 rear and .125 / 215 for the front on a Glock 19. I am very satisfied with the sights and will buy again. I did not have to file any material off the rear sights.

  6. Can't MIss With 10-8 Performance 5 Star Review

    Posted by on 20th Sep 2014

    I figure there are three considerations when evaluating sights; ordering, installation and zeroing. Ordering is easy and accurate if you utilize the recommendations available on the website. 10-8 Performance communicates well relative to the status of your order and ships quickly. Initial inspection should satisfy the most critical eye. Rock solid construction, no sharp edges and good, non-reflective finish. Installation is a breeze with a brass drift, a small hammer and the correct size hex key, which is included. Zeroing is relatively fast. Of course, it does require a certain amount of fiddling, but that can be reduced with the use of a caliper w/depth measurement capability. The eyeball method works too. I'm not positive that the U shaped notch actually aids me in my style of shooting, but it certainly is no disadvantage either. I have 10-8 Performance sights on 3 of my pistols and couldn't be more satisfied.

  7. Top quality with superb performabce. 5 Star Review

    Posted by on 14th Sep 2014

    I firmly believe that the 10-8 U notch rear sight is the best upgrade you can make to your firearm when it comes to sights. The quality of the part is second to none. The U notch, when combined with a fiber optic front sight, allows for extremely fast target acquisitions and equally as fast follow up shots. Though it's not technically as accurate as the std square system at full speed, it's easily over looked by how fast you can pick up the sight picture and get rounds on target. The accuracy difference is pretty negligible but the speed is far and above. The rear serrations kill any glare. Though the dovetail is pretty tight in the slide the locking screw adds extra insurance that the sight isn't going to move. The shelf helps with one handed loading and manipulation drills. You can rack it off your shoe, belt, basically anything you can hook the sight on. I cannot say enough about how much I like this sight.

  8. great to deal with, great product 5 Star Review

    Posted by on 8th Sep 2014

    very nice peeps to deal with. great product. i would recommend the company as well as the product.

  9. The Champagne of Sights 5 Star Review

    Posted by on 16th Jul 2014


  10. 10-8 sights for Glock are all you need. 5 Star Review

    Posted by on 5th May 2014

    Having become tired of the fragility of fiber front sights and wanting a durable combat sight that is easy to pick up I opted for the 10-8 .140 u-notch rear with a brass bead front. This gives me the simplicity of iron sights with a high contrast dot that will not break or fall out. The finish and shape of these sights make them very snag resistant and durable and the flat area on the front of the rear sight allows for one handed slingshot reloading on the heel of my boot or on a sturdy belt.
    Excellent fit and superb all around design. Am in the process of replacing the sights on all of my guns to this setup.

Showing reviews 1-10 of 61 | Next

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