Marine-environment variant of the 590 with electroless nickel plating on all metal parts and a synthetic stock. Designed for coastal and marine use where salt air and water immersion are routine operating conditions. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 8 Year introduced: 1990, USA Weight: 7.5 oz Overall length: 39.5" Status: Active Intended use: Home Defense/Tactical