Mossberg 590A1 12 Gauge Pump Shotgun | 20" Heavy-Wall Barrel, 8+1, Ghost-Ring Sights
The Mossberg 590A1 is the only pump shotgun to pass the rigorous MIL-S-3443E endurance tests, and this example upholds that reputation with a heavy-wall, parkerized 20" cylinder-bore barrel, a full-length 8-round magazine tube, and ghost-ring sights for fast target acquisition. A SpeedFeed IV stock with integral shell storage, top-tang ambidextrous safety, and drilled-and-tapped receiver round out a package built for durability and practical performance.
Condition
Overall Condition: Good – shows some signs of prior use and handling.
Bore Condition: Excellent – bright, clean, mirror finish, no signs of wear.
What’s Included
- Mossberg 590A1 12 Gauge pump-action shotgun
This 590A1 features a heavy-wall steel barrel finished in matte parkerizing that resists corrosion and heat from sustained fire. The cylinder bore and 3" chamber handle both 2.75" and 3" shells without choke constriction, making it adaptable to a wide range of loads.
The full-length magazine tube holds eight 2.75" shells plus one in the chamber, and it is capped with a clean-out screw for straightforward maintenance. Dual action bars and a steel bolt contribute to the shotgun’s smooth, reliable cycling.
A black synthetic SpeedFeed IV stock provides two shell storage tubes in the butt, keeping extra rounds at hand. The 14" length of pull suits most shooters while maintaining good balance with the 20" barrel.
Sighting is handled by a protected orange-insert post front and an adjustable receiver-mounted ghost-ring rear. The receiver is drilled and tapped, allowing easy mounting of optics if desired.
An integral bayonet lug, top-tang ambidextrous safety, and ribbed synthetic fore-end complete a build designed for hard use, whether in duty, defensive, or training roles.