Umarex XBG 2254804 CO2 Powered .177 Caliber Steel  BB Air Gun Pistol 19 shot drop free metal magazine for quick reloading. Velocity (FPS): 410 Powered by one 12 grain CO2 capsule housed in the grip Fixed front and rear sights Integrated Picatinny rail. Total length (inches): 6.75 Shoots in double action at 410 feet per second Lightweight and compact design 19-shot drop-free metal magazine Powered by a 12-gram CO2 capsule 410-FPS