The compact 18.5-inch 590A1 maintains the full 9-round magazine tube of its 20-inch sibling in a shorter package. Preferred by law enforcement and homeowners who prioritize maneuverability over sight radius. Same mil-spec construction: heavy barrel, metal trigger group, metal safety. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 9 Year introduced: 1987, USA Weight: 112 oz Overall length: 39.5" Status: Active Military use: Yes Intended use: Military, Law Enforcement, Home Defense, Tactical