Crosman Triple Threat is a Semi-Auto .177 caliber BB and Pellet Revolver shoots up to 465 feet per second and is powered by CO2. The pistol kit features a 3 interchangeable barrels (ten-inch six-inch and three-inch) for the ulitimate in customization and has two clips (10-shot pellet and 6-shot BB) so be ready to shoot fast. The Triple Threat has both single and double action firing with an adjustable rear sight. Don t forget Crosman ammo and CO2!