KWA factory original standard H&K USP .45 Tactical NS2 Gas Blowback Pistol 25-round gas magazine (NS2), for the KWA H&K USP .45 Tactical NS2 Gas Blowback Pistol (will not work with other KWA models). Durable metal construction with reinforced feed nozzle - newest NS2 model.
NOTE: DO NOT USE PROPANE, RED GAS, or HFC 134a Gas with this KWA product. Using propane with this KWA Gas Blowback will void the manufacturer's warranty, and can cause irreparable damage to the rifle.