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 shim kit, shot plug, three Beretta/Benelli Mobil Chokes- improved cylinder, modified and full. Hand Right Hand Gauge 20 Gauge Action semi-auto Safety Crossbolt Series Synthetic Sights Fiber Optic Front Weight 6.10 lbs Chamber 3" Trigger Standard Capacity 5+1 Weight Range 6 lbs to 6.99 lbs Barrel Length 26" Chokes Included F,M,IC Barrel Description Vent Rib Chrome-Lined Metal Finish Group Blued/Black Stock Finish Group Black Barrel Length Range 26" to 26.99" Choke Configuration MobilChoke Receiver Description Black Steel