The Mossberg 930 SPX is the tactical performance variant with an 18.5-inch cylinder-bore barrel, ghost ring sights, pistol grip stock, M4-style stock option, and Picatinny top rail. 7+1 capacity. Self-regulating gas system. Competitive pricing for a tactical semi-auto. Type: Semi-Automatic Shotgun Action: Gas-Operated Caliber: 12 Gauge Capacity: 7 Year introduced: 2009, USA Weight: 7.75 oz Overall length: 38.5" Status: Active Intended use: Tactical, Law Enforcement, Home Defense, Competition