The Viper G2 Pro 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 manual E-Z load mag cut off; vent rib w/matted sight plane; quick shot plug removable and fiber optic sight. Includes shot plug, three Beretta/Benelli Mobil Chokes- improved cylinder, modified and full. Includes two stock combo that comes with a youth stock already assembled on the gun, an adult stock in the box and a 2" barrel extension.