The Viper Max 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. It 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.Features: Action: Semi-Auto Barrel Length: 28" Capacity: 5+1 Sights: Fiber Optic Front Hand: Right Safety: Crossbolt Chamber: 3.5" Gauge: 12 Gauge Weight: 7.40 lbs Choke Configuration: MobilChoke Chokes Included: FICMSK Barrel Description: Vent Rib Chrome-Lined Barrel Length Range: 28" to 28.99" Weight Range: 7 lbs to 7.99 lbs Stock Finish Group: Natural Camouflage