Gunsmith Bros Ultra Cut Open Upper Slide Set for Marui Hi-Capa GBB Battery-Size_7.4v NOTE: You can always choose

NOTE: You can always choose a longer Barrel if you have a extended Outer barrel installed

Mounting system which can fit on the railed system of the FAST or Arc helmets

Steel housing 35 rounds magazine

Ultralight weight upgrade part

Gunsmith Bros Ultra Cut Open Upper Slide Set for Marui Hi-Capa GBB Battery-Size_7.4v NOTE: You can always chooseGunsmith Bros Ultra Cut Open Upper Slide Set for Marui Hi Capa GBB CNC Aluminum Construction Packagen Include Slide, Cocking Handle, Compensator & Outer Barrel IPSC style Slide (With Big Hole On Front Top, Small Hole on Both) Suitable for Tokyo Marui Hi Capa Series Airsoft Gas Blow Back GBB Airsoft Guns Pistol