2 piece hop up

  1. cteas21
    Thread

    2 Piece to 1 Piece Hop Up Mod Help

    Hey all, I have a KWA KM4-A1 that I converted to a DMR, and want a better hop up unit such as the Madbull Ultimate Hop (It uses AUG Hop I'm...
    Thread by: cteas21, Feb 9, 2016, 4 replies, in forum: Gun Building, Modifications & Repairs
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