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Glock Sight Heights OEM & Aftermarket

Discussion in 'Sights, Optics and Lasers' started by sgtlmj, Jul 24, 2011.

  1. sgtlmj

    sgtlmj NRA Life Member Millennium Member

    Feb 23, 1999
    Okay, I'm looking for a good set of sights for my G21 and wanted to try something besides the traditional 3-dot Trij's that I usually install. In shopping around, I'm discovering that different manufacturers have a different idea of heights. I'll use the difference between the factory G17 and G21 sights:


    G17---0.256---0.165 diff: 0.091
    G21---0.270---0.165 diff: 0.105

    Now 10-8Performance has these dimensions for it's Glock sights according to the Brownells listing info:

    -------0.252---0.215 diff: 0.037

    Doesn't seem to be nearly enough height difference when compared to the OEM Glock sights. What gives? Is Brownells showing incorrect numbers?
    Last edited: Jul 24, 2011