This airsoft pistol from Heckler & Koch impresses mainly with its stunning appearance and technology. The weapon is made of three special materials: plastic, steel, and aluminum. The magazine of the weapon holds 13 BBs and a 12g CO2 capsule, the slide is made of metal and is particularly heavy, providing a realistic feel and good handling. With the blow-back effect and the original licensed markings (found on the metal slide and the grip), this CO2 replica is very authentic and hardly distinguishable from the original.