The Remington 870 Marine Magnum features electroless nickel plating on all metal components for maximum corrosion resistance in saltwater environments. Synthetic stock standard. The 18-inch barrel and 7+1 capacity make it a capable defensive shotgun that resists rust in maritime or coastal conditions. Type: Shotgun Action: Pump-Action Caliber: 12 Gauge Capacity: 7 Year introduced: 1987, USA Weight: 7.5 oz Overall length: 38.5" Status: Active Intended use: home_defense, tactical, maritime, Home Defense/Marine