The Benelli M2 Field is the standard inertia-driven semi-automatic hunting shotgun in the Benelli lineup, chambered for 3-inch shells. The inertia-driven system uses the energy of recoil to compress a spring and cycle the action, requiring no gas ports and making the mechanism exceptionally reliable and easy to clean. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 1993, Italy Weight: 208 oz Overall length: 49.5" Status: Active Intended use: Hunting, Waterfowl, Sport