The Mossberg 500 is the best-selling pump-action shotgun in US history. The 28-inch field configuration is the traditional bird-hunting setup with a vent-rib barrel and bead front sight. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 6 Year introduced: 1961, USA Weight: 7.25 oz Overall length: 48" Status: Active Intended use: Field / Hunting