More room to facilitate a bigger battery

Check out the carbon fiber outer barrels to go with these(not included) at SS Airsoft

Front and rear sling hooks can be installed on left or right side

This shotgun features 3 barrels with fixed hop up which allows the users to switch from 3 rounds or 6 rounds per shot by a flick of a lever located inside the ejection port

20g high grade or heavier BB high grade BBs recommended

Elite Force Magazine Rebuild Kit for HK USP (Model: 2275005) carbon fiber More room to facilitate aThis is a pistol rebuild kit for the HK USP Gas Blowback (GBB) Magazines by KWA. This particular kit is only applicable for HK USP Model No 2275005.