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ThunderCactus · February 1st, 2008, 03:04

Every G&P hopup unit I've taken apart from a G&P gun has used that brass ring as a shim to keep the hopup chamber inline with the inner barrel. Never seen it used on the hopup rubber like that before...

February 1st, 2008, 03:04	#30
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Every G&P hopup unit I've taken apart from a G&P gun has used that brass ring as a shim to keep the hopup chamber inline with the inner barrel. Never seen it used on the hopup rubber like that before...