Mossberg 590A1 Tactical 12GA 18.5" 6+1 M-LOK Handguard 50766

The Mossberg 590A1 Tactical delivers military-proven reliability in a configuration optimized for tactical applications and home defense. This 12-gauge platform combines the legendary durability of the 590A1 series with modern M-LOK compatibility for versatile accessory mounting.

What Makes This Different

The 590A1 features a heavy-walled barrel and metal trigger guard assembly that sets it apart from standard pump-action shotguns. Military testing has validated this platform's ability to function reliably after firing over 3,000 rounds of military specification ammunition. The cylinder bore barrel provides consistent patterns with buckshot and slugs without the restriction issues common in modified chokes.

Key Features

• 18.5-inch heavy-walled barrel with cylinder bore for optimal tactical performance
• 6+1 capacity with 3-inch chamber capability for versatile ammunition options
• M-LOK compatible handguard for lights, lasers, and vertical grips
• Black Parkerized finish provides corrosion resistance in harsh environments
• Metal trigger guard and safety button exceed military durability standards
• Synthetic stock resists impact damage and temperature extremes
• Dual extractors and positive steel-to-steel lockup ensure reliable cycling

Field performance demonstrates consistent 2.5-inch patterns with 00 buckshot at 25 yards and sub-4-inch groups with rifled slugs at 50 yards. The action cycles smoothly under rapid fire conditions and maintains function in sandy, muddy, and wet environments. Law enforcement agencies have documented reliable performance in temperatures ranging from -20°F to 140°F without lubrication adjustments.

Technical Specs

• Gauge: 12-gauge, 3-inch chamber
• Barrel Length: 18.5 inches, cylinder bore
• Overall Length: 39.5 inches
• Weight: 7.25 pounds
• Capacity: 6+1 rounds
• Stock: Black synthetic with 14-inch length of pull
• Finish: Black Parkerized receiver and barrel
• Safety: Tang-mounted, cross-bolt style
• Sights: Bead front sight
• Made in USA with limited warranty

This configuration balances maneuverability with the proven reliability that made the 590A1 the choice of military forces worldwide. The M-LOK handguard transforms this classic design into a modern tactical platform without compromising the fundamental reliability that defines the series.