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.Caliber: 177 BBCapacity: 15+1Sights: Fiber Optic Front & Rear