IMPROVED REAP HOPUP RUBBER BUCKINGImproved Reap nub design for better consistency (drop in bucking). Provides similar performance as rHop mods for DG systems. Hard stop lip to prevent BBs from over travel. Optional brass holding ring included for use if BBs roll drop out Do NOT boil this rubber *Plunger Spring Mod is required to maximize the performance of Reap Nub bucking. *Reap Bucking is NOT designed to improve performance on LMG platforms *Due to post processing, rough edges may