A quiet CO2-powered pellet repeater for hours of backyard target-plinking fun. Powered by two 12-gram CO2 capsules (CO2 NOT included. To ensure a proper seal and for best performance, Umarex-brand CO2 is recommended.). Shoots .177 caliber alloy pellets at up to 800 FPS. 45 shots per two 12-gram CO2 capsules; Includes three 10-shot rotary magazines. Features an 11mm dovetail rail for airgun scope mounting, a lightweight polymer stock, fiber optic front sight and fully-adjustable rear sight; Compatible with spare magazine part number: 2252123.