Mossberg 590A1 12 Gauge Shotgun 18.5" Barrel 6+1 Capacity Black

The Mossberg 590A1 delivers military-grade reliability in a compact 18.5-inch barrel configuration designed for tactical applications and home defense. This 12-gauge shotgun combines proven pump-action mechanics with heavy-wall barrel construction to withstand the most demanding conditions.

What Makes This Different

The 590A1 features a heavy-wall barrel that exceeds military specifications, unlike standard sporting shotguns with thin-wall barrels. The aluminum trigger guard and safety button provide enhanced durability over polymer components found in budget alternatives. Metal trigger guards and safety mechanisms resist impact damage and maintain function in extreme temperatures ranging from -40°F to 140°F.

Key Features

• Heavy-wall 18.5-inch barrel with cylinder bore choke for maximum reliability
• 6+1 shell capacity with 3-inch chamber capability
• Aluminum trigger guard and metal safety button for enhanced durability
• Dual extractors and positive steel-to-steel lockup for consistent cycling
• Anti-jam elevator design prevents double-feeding malfunctions
• Ambidextrous top-mounted safety accessible to both right and left-handed users
• Parkerized finish provides corrosion resistance in harsh environments

Field performance demonstrates consistent cycling with 2¾-inch and 3-inch shells across temperature extremes. The cylinder bore configuration patterns effectively with 00 buckshot at typical home defense distances of 7-15 yards. Law enforcement agencies have documented over 200,000 rounds of service use without major component failure. The heavy-wall barrel construction maintains accuracy and reduces wear compared to standard thickness barrels.

Technical Specs

• Gauge: 12-gauge with 3-inch chamber
• Barrel Length: 18.5 inches, cylinder bore
• Overall Length: 38.5 inches
• Weight: 6.75 pounds
• Capacity: 6+1 rounds
• Stock: Black synthetic with 14-inch length of pull
• Finish: Matte black Parkerized
• Safety: Ambidextrous top-mounted tang safety
• Sights: Bead front sight
• Made in USA with lifetime warranty

The 590A1 meets MIL-SPEC 3443G standards for military procurement, ensuring component quality exceeds civilian shotgun requirements. Professional users choose this platform for its documented reliability record and parts availability through authorized service centers nationwide.