The Mossberg 590A1 with a 14-inch barrel is a short-barreled shotgun (SBS) configuration requiring NFA registration. It provides maximum compactness for close-quarters military and law enforcement operations while retaining all 590A1 heavy-duty features. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 6 Year introduced: 1987, USA Weight: 7.5 oz Overall length: 35" Status: Active Military use: Yes Intended use: Military/Tactical/NFA