The Winchester Super X3 was a gas-operated semi-automatic shotgun featuring the Active Valve gas system and reduced recoil design that preceded the current SX4 platform, offering versatility from light 2-3/4 to 3.5-inch magnum loads. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 2006, USA Weight: 56 oz Overall length: 48" Status: Discontinued Intended use: hunting,clay-sports