COWCOW Technology CNC Aluminum Blow Back Unit for Marui Model 17 GBB (Silver)

COWCOW Technology CNC Aluminum Blow Back Unit for Marui Model 17 GBB (Silver) CNC Aluminum Construction Ultra Lightweight Design Durable Construction Prevents Flexing and Warping Under Hard Use Provide Stable and Smooth Blowback Cycling Perfect Fit with COWCOW CCT-TMHC-054 piston head and CCT-TMG-042 & 043 loading nozzle Suitable for Toyko Marui Model 17 Series Airsoft Gas Blow Back GBB Pistol