The M3000 Combo ships with two barrels — a 28-inch field barrel and an 18.5-inch defense barrel — giving buyers two configurations in one package. The inertia-operated action is shared between both barrels. A popular option for buyers who want both a field gun and a home defense configuration. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 4 Year introduced: 2013, Turkey Weight: 83.2 oz Overall length: 47" Status: Active Intended use: Hunting, Home Defense