3 gas operated semi-automatic shotgun that allows you to shoot light target loads to heavy waterfowl loads utilizing a two piston system. The Viper Max comes with a light and heavy load piston. Use light load piston for 2 shells for other rounds use heavy load piston. Secondary piston can be stored in forearm for easy retrieval. The Viper Max comes with 4 Beretta/Benelli Mobil Chokes (SK IC M F) as well as over molded rubber grips on the stock and forearm for added comfort. Newly developed recoil pad and swivel studs also included. Back by our Five Year Warranty. - Features - Magazine Cut-off Action - Vent Rib w/ Matted Sight Plane - Fiber Optic Sight - 5 Round Magazine Shot Plug Included - Quick Shot Plug Removal - Chrome-lined Chamber and Barrel - Swivel Studs - 4 Beretta/Benelli Mobil Chokes (SK IC M F) - Reatree Max-7 Camo Pattern