GUNS MODIFY Aluminum CNC Zero Housing System for Marui G17 with RMR Cut GBB Airsoft

CNC Machined construction
Lightweight aluminum housing w/ piston
One-way, steel lever design greatly reduces resistance by cocked hammer during return cycle
Compatible with roller and bearing type hammer for further resistance reduction
Aluminum back plate, Steel Hammer included
Suitable for Marui G17 GBB Pistol with RMR Cut slide ( Gunsmodify SA, PTS Atom, RWA Agency )