KWA USP Tactical NS2 airsoft gas GBB Pistol [Black] (AS SEEN IN COD: Modern Warfare 2). A full sized, awesome gas blowback gun you will surely enjoy for a lifetime. The KWA HECKLER & KOCH USP  Series of gas pistols are some of our best selling gas pistols. Using full aluminum components mounted to a robust polymer frame. The guns are known for the realistic weight, great gas consumption and reliability. Features working de-cocker/safety.