Mossberg 590 Mariner 12 Gauge Pump-Action, 20 in Barrel, 8+1 Capacity, Matte Nickel
The Mossberg 590 Mariner stands out with its corrosion-resistant matte nickel finish and 9-shot (8+1) configuration. This full-size 12 gauge features a 20-inch steel barrel with a fixed cylinder bore, a durable synthetic stock, and a ribbed fore-end. The receiver is drilled and tapped with plug screws installed, and the shotgun is built in the United States.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Specific Condition Notes: This firearm is in great shape with minor scratches and blemishes present. There are small green oxidation deposits on the barrel. The bore shows minor blemishing.
What’s Included
- Unbranded black polymer pistol grip (not installed)
- Screw with washer for attaching the pistol grip
The Mariner finish provides added protection against harsh environments, applied to both the aluminum alloy receiver and the steel barrel in a uniform matte nickel. The extended magazine tube features a knurled clean-out cap and delivers a 9-shot setup (8+1) for increased on-board capacity.
The 20-inch barrel uses a fixed cylinder bore and a single bead front sight for straightforward targeting. The receiver comes drilled and tapped with plug screws installed, offering flexibility for mounting solutions if desired at a later time.
Controls and furniture are designed for durability and ease of use. The tang-mounted safety is ambidextrous, and the synthetic stock includes a recoil pad and rear sling swivel stud. A ribbed synthetic fore-end provides a secure grip during cycling.
This 12 gauge is chambered for both 2 3/4-inch and 3-inch shells, adding versatility to its pump-action operation. Built in the United States, it combines proven 590-series design with the Mariner’s corrosion-resistant construction.