m nub

  1. cteas21
    Thread

    Flat Hop Not Working HELP!!!

    Hey all, I installed a flat hopped G&G Green into my KWA M4-A1 along with a HS5 M Nub. I am getting ZERO hop, and the m nub is perfectly fit to...
    Thread by: cteas21, Feb 13, 2016, 8 replies, in forum: Gun Building, Modifications & Repairs
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