Mossberg 590 with 9-shot magazine tube, metal trigger group, and heavy-walled barrel for military and tactical use. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge 3-inch Capacity: 9 Year introduced: 1987, USA Weight: 224 oz Overall length: 39.5" Status: Active Military use: Yes Intended use: military, law enforcement, home defense