The Mossberg 930 Home Security trades the hunting barrel for an 18.5-inch cylinder bore barrel, an 8-round extended magazine tube, and synthetic furniture optimized for defensive use. It combines semi-automatic follow-up capacity with Mossberg reliability. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 7 Year introduced: 2005, USA Weight: 240 oz Overall length: 39.5" Status: Active Intended use: Home Defense, Tactical