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Glock Rear Sight

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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 a dot such as on our tritium insert 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.  
    • EVERY Glock, including Gen 5, 19X, etc. all use the same front and rear sights.
    • The only Glocks with unique sights are as follows:
      • Glock 42/43 needs a shorter front and narrower rear, and use our model specific front/rear sights.
      • Glock MOS slides use the universal Glock rear dovetail, but located more to the rear. We have specific sights compatible with the MOS slide.
  • 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)
    • most Glock models, regardless of caliber and generation, most commonly use the .215" front.  
    • Glock 34/35, 41, 17L, 24L most commonly uses the .235" front.  Sights do not overhang slide cutout.
    • 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.

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 83 | Next

  1. Best in the business 5 Star Review

    Posted by on 29th Mar 2018

    I have these on all my firearms, what more can I say. AWESOME!!!

    Shipping rivals Amazon.

  2. The best U notch on the market IMO... 5 Star Review

    Posted by on 6th Mar 2018

    Plain black serrated rear with FO front is my preferred setup, and I've found in the last handful of years U notch rears are faster for me. I've tried quite a few, and the .156 U notch rear has become my most consistent. These sights are incredibly well made & machined. I installed 7 sets, a few of them required minor fitting, and this is to be expected, couple of passes with a file. I paired them with Dawson precision front fiber optic sights, my preferred front. Though the wider u notch of a Trijicon HD offers slightly faster acquisition, I find the rear lamps distracting, even when they are blacked out, and not as precise. But, given the appropritate amount of familiarization my acquisition has become just as fast, with the added benefit of the .156R/.125F to provide a great deal more accuracy & precision.

  3. When only the best will do. 5 Star Review

    Posted by on 15th Jun 2017

    Tremendous rear sight, this is all I use. It's the best!!!

  4. .156 notch is fantastic 4 Star Review

    Posted by on 11th Jun 2017

    This rear sight, with a fiber optic front, is simply fast. You will see results day one.

  5. Very loose Fit 1 Star Review

    Posted by on 21st May 2017

    I expected to have to press fit the sight but it was so loose that it would come out the other side with out any force or pressure.

  6. Exelent upgrade 5 Star Review

    Posted by on 6th May 2017

    Anyone with a Glock knows the sight issues are the 1st thing to replace. What everyone needs to know is to replace them with the 10-8 options. They are well made, easy to install, and fast to pick up when sighting in. Got them... tried them... love them!

  7. Rear .140 Sights 5 Star Review

    Posted by on 14th Apr 2017

    This is my 2nd Set of 10-8 sights. The U-Notch is fantastic and fast to pick up. Hands down they are the best. Nothing else compares. Simply Quality!! Easy Installation.

  8. Top notch product 5 Star Review

    Posted by on 20th Oct 2016

    The best rear sight out there. The serrations and U-Notch make target aquisition and accuracy so fast and simple. Sight fit right on easily with no adjustments. I have this style 10-8 sight on all of the guns I frequently shoot. They never let me down. The 10-8 performance staff are so nice and professional and always promptly respond to questions.

  9. fit and finish is awesome 5 Star Review

    Posted by on 12th Sep 2016

    Very well made product. I will consider using these sights for the rest of my weapons in the future... You will like these rear sights.

  10. Great Sight 5 Star Review

    Posted by on 15th Aug 2016

    I have 10-8 rear sights on three different Glocks. They always install easily, without any need to be fitted or shaved. The sight picture is great. Overall, a quality made product., that I highly recommend.

Showing reviews 1-10 of 83 | Next

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