T-N.T. Studio APS-X HOP-UP System H+ Retrofit Kit for GHK M4 GBB (455mm) go pro Nine Ball High Bullet Valve

Nine Ball High Bullet Valve NEO for Tokyo Marui HK45 / Desert Eagle

Smart Trigger

Included in the kit:

Suitable for Airsoft Electric Gun AEG Rifle (Must be used with ARES Slim Pistol Grip

Aluminum Free Float Rail System Handguard (280mm)

T-N.T. Studio APS-X HOP-UP System H+ Retrofit Kit for GHK M4 GBB (455mm) go pro Nine Ball High Bullet ValveT N. T. Studio APS X HOP UP System H+ Retrofit Kit for GHK M4 GBB (455mm) Metal Construction Include HOP UP chamber & Inner Barrel better air tightness, BBs feeding more smoothly!! No more jam!! No more BB broken!! and do not choose BB type ANYMORE! Suitable for GHK M4 Series Airsoft Gas Blow Back GBB Rifle