The Mossberg 930 is a gas-operated semi-automatic shotgun featuring a dual gas vent system that cycles reliably with both light target loads and heavy 3-inch magnums. The Field model is designed for hunting waterfowl and upland game. Type: Semi-Auto Shotgun Action: Semi-Auto Caliber: 12 GA Capacity: 4 Year introduced: 2005, USA Weight: 7.5 oz Overall length: 49" Status: Active Intended use: Hunting, Field