Elite Force HK USP GBB Airsoft Pistol Black. To learn more about shipping restrictions visit the Umarex USA Shipping Restrictions page. Specifications for Elite Force HK USP GBB Airsoft Pistol: Manufacturer: Elite Force Gun Model: Heckler & Koch USP Color: Black Magazine Capacity: 26 Round Velocity: 350 fps Projectile Caliber: .243 Caliber Gun Make: Heckler & Koch Package Contents: Elite Force HK USP GBB Airsoft Pistol What firearm models does the manufacturer say Elite Force HK USP GBB Airsoft Pistol is compatible with? The manufacturer says that Elite Force HK USP GBB Airsoft Pistol is compatible with Heckler & Koch USPElite Force 2275002: HK USP GBB Airsoft PistolBlack