The Umarex DX17 single stroke air pistol is the perfect air gun for recreational plinking. This spring-piston gun fires .177 BBs and has a convenient built-in ammo reservoir that holds 15 BBs. The DX17 has an integrated Picatinny rail, a fiber-optic front sight, and an ergonomically comfortable grip. The serrated slide makes it easy to grasp and charge and the flip-up loading port makes it simple to load with BBs. This Umarex BB Gun includes 200 steel BBs in the kit.