The 930 SPX is Mossberg's tactical semi-auto configuration, featuring an M16-style pistol grip stock, integral Picatinny rails, ghost-ring sights, and an 8-round extended tube magazine. It is designed for 3-gun competition and tactical use. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 8 Year introduced: 2008, USA Weight: 256 oz Overall length: 39.5" Status: Active Intended use: 3-Gun, Tactical, Competition