The Viper G2 Pro Sporting is a gas operated, semi-automatic shotgun that allows you to shoot light target loads to heavy waterfowl loads utilizing a two piston system. The secondary piston can be stored in forearm for easy retrieval. Featuring oversized operation hardware; Over-molded rubber grips on the stock and forend; enlarged triangular safety; and a larger mag well for EZ loading; manual E-Z load mag cut off; raised target rib w/matted sight plane; quick shot plug removable; swivel studs and fiber optic sight. Includes shim kit, shot plug, four Beretta/Benelli Mobil Chokes- skeet, improved cylinder, modified and full.