The Winchester SX4 is the fourth-generation Super X gas-operated semi-auto, featuring a self-adjusting Active Valve gas system and Inflex Technology recoil pad. It cycles everything from light 1-ounce target loads to heavy 3-inch steel shot, positioning it as a true all-purpose semi-auto at a competitive price. Type: Semi-Auto Shotgun Action: Gas-Operated Caliber: 12 Gauge Capacity: 4 Year introduced: 2016, Belgium/Japan Weight: 6.9 oz Overall length: 49" Status: Active Intended use: Field, Hunting, Waterfowl