Iver Johnson Arms Stryker is an AR15 style semi-automatic shotgun which features a smooth bore barrel with muzzle break. It utilizes a synthetic forend with rails on the sides and bottom, 2-piece pistol grip stock with push button releases, standard AR15 bolt release and mag release. The Stryker also has an A2 style detachable carry handle with adjustable sight, fiber optic front sight, cross trigger safety, and thick rubber buttpad. It includes two 5-round box magazines. - CHAMBER 12GA 3" - MAGAZINE (2) 5rd capacity - SIGHTS Adjustable Rear, Fiber Optic Front - BARREL Muzzle Break