With the Iver Johnson HP18-12 you can convert from a bull length stock to a pistol grip only stock with just the push of a button. With the butt stock and pistol grip the HP18-12 is easy to control when rapidly placing shots on target. For situations where a shorter shotgun is desired the buttstock is removed. The HP18-12 semi-auto shotgun is perfectly suited for home defense. The 18.5" barrel has a fixed cylinder choke and externally threaded muzzle brake. A ghost ring rear sight and fiber optic front sight make accurate shots with slugs possible. The Picatinny rail on the receiver is perfect for attaching optics while the Picatinny rail on the forend is perfect for mounting a light. With a 5+1 capacity you can put rounds down range as fast you can operate the trigger.- CHAMBER 12GA 3"- MAGAZINE TUBE 5rd capacity- BARREL 18.5" Barrel with Cylinder Bore Choke, Externally Threaded Muzzle Brake- SIGHTS Ghost ring rear sight and fiber optic front- STOCK Black Synthetic Pistol Grip Stock with Removable Butt Stock