1339.00 Remington Model 870™ Special Purpose Marine Magnum™, 12ga 18" Plain Barrel Calgary Apr 17, 2024 - 12:59 PM bashawsports Dealer A highly durable 12-gauge utility gun that resists corrosion on land or water. Electroless nickel plating covers all metal, including the inside of the barrel and receiver. The synthetic stock has generous checkering for positive control.