The Mossberg 500 Home Security is a dedicated defensive variant with an 18.5-inch cylinder-bore barrel, bead sight, and black synthetic furniture, sold specifically for home defense applications. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 6 Year introduced: 1961, USA Weight: 7.5 oz Overall length: 38.5" Status: Active Intended use: Home Defense