The Mossberg 930 Home Defense is the entry-level semi-auto defensive configuration with 18.5-inch barrel, synthetic stock, and bead sight. 7+1 capacity. Self-regulating gas operation. Positioned as the semi-auto alternative to the pump-action 500. Type: Semi-Automatic Shotgun Action: Gas-Operated Caliber: 12 Gauge Capacity: 7 Year introduced: 2008, USA Weight: 7.5 oz Overall length: 38.5" Status: Active Intended use: Home Defense