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Glock 42/43 Rear Sight

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Product Description

Precision CNC machined from heat treated 4140 bar stock and finished in black QPQ salt bath nitrocarburizing (aka Melonite, same as the Glock slide). Features our U notch for rapid, intuitive alignment with dot inserted front sights. The rear face is plain black, serrated at 40 lpi to reduce glare in varied lighting conditions.

Sight body is narrower to fit smaller Glock 42/43/43X slides. Net blade height is .165", same as factory rear sight (total sight height is .240"). Compatible with factory front sight and other .160" tall front sights.

Available in .140" and .156" width notches.

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

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Product Reviews

Showing reviews 1-10 of 11 | Next

  1. Provides excellent contrast to fiber optic front sight 5 Star Review

    Posted by on 2nd Jul 2019

    Excellent rear sight. The U notch makes for easy acquisition of the front sight. It provides outstanding contrast in a low profile sight, ideal for a carry gun.

  2. Best sights ever 5 Star Review

    Posted by on 23rd Feb 2018

    10-8 has the best pistol sights I've used!

  3. Very shallow 3 Star Review

    Posted by on 16th Aug 2016

    SIght is good quality and installed easily. The .156" size is the way to go. However, the sight is VERY small with a shallow sight notch. If your used to a Warren/Sevigny type sight picture you will not like this sight. At speed I found the shallow sight picture difficult to work with. Not a fan of the U notch, especially with such a shallow notch.

  4. Glock 43 rear sight 4 Star Review

    Posted by on 19th Jul 2016

    Pretty good rear sight overall, a .156 notch paired with a Bigdot XS standard G43 front sight and it works perfect. My only drawback is that on the G43 the rear sight looks really disproportionately narrow mounted on the slide.

  5. Typical 10-8 Quality Product 5 Star Review

    Posted by on 18th Dec 2015

    If you shop here and you shop here enough, then you know your high expectations will be met.

  6. Awesome rear sight 5 Star Review

    Posted by on 15th Dec 2015

    Edges aren't sharp like Trijicon's. Wont dig into your skin. Fast sight acquisition.

  7. quality finish and machine work 4 Star Review

    Posted by on 27th Sep 2015

    Nice build quality and finish. Slightly small on a 43 slide. I think the larger notch would probably suit most people better. Likely the perfect size for the 42

  8. Great Performance Enhancement 5 Star Review

    Posted by on 21st Aug 2015

    I'm a dedicated 10-8 user, so now my G43 has the same sights as all my other Glocks! A must have...

  9. Excellent replacement 5 Star Review

    Posted by on 20th Aug 2015

    As always 10-8 has provided me with an exceptional carry sight. I use their sights exclusively on all my carry guns.

  10. 10-8 are the only sights i use! 5 Star Review

    Posted by on 29th Jun 2015

    I have 10-8s on 1911s, Glocks, M&Ps ,Walthers.
    The quality is always top notch!

Showing reviews 1-10 of 11 | Next

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