The TriStar Viper series is a semi-automatic, gas operated shotgun that is reliable. Its removable choke system uses Beretta/Benelli Mobil threads. The Viper features manual E-Z load mag cut-off, vent ribbed barrel with matted sight plane and fiber optic front sight and chrome-plated chamber. Includes shot plug, three choke tubes IC, M, F, choke box and wrench. Hand Right Hand Gauge 12 Gauge Action semi-auto Safety Crossbolt Series Synthetic Sights Fiber Optic Front Weight 6.80 lbs Chamber 3" Trigger Standard Capacity 3+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