The Hatsan SDX12 is a semi automatic AR-style 12GA shotgun with 3" chambers and 18" barrel. Details: Stock and Forend: Pistol Grip stock with adjustable comb and accessory rails, extra mag storage Recoil Pad: Rubber Receiver: Anodized alloy upper reciever Barrel Length:18" Overall Length: 37.6" Included Chokes: F, IC, CYL(brake) Sight: Adjustable rear sight and front sight Safety: Selector switch