The Mossberg 590A1 in 12 gauge with a 20-inch barrel (brand part no. 51660) is finished in black parkerized steel for corrosion resistance on Mossberg’s duty-proven platform. Mossberg equips this configuration with a bead front sight and a fixed cylinder bore choke, and the 590A1’s dual-extractor, twin-action-bar design keeps the action cycling reliably. The shotgun feeds from a tubular magazine with an 8+1 capacity, giving a higher onboard round count than the base 590A1. Among pump-action shotguns, this 590A1 favors buyers who want a straightforward, parkerized duty-grade platform.

Key Specifications

• Chambered in 12 gauge.
• Operates as a pump-action shotgun.
• Features a 20-inch barrel.
• Feeds from a tubular magazine.
• Holds an 8+1-round capacity.
• Barrel and receiver finished in black parkerized steel.
• Equipped with a bead front sight.
• Fitted with a fixed cylinder bore choke.
• Overall length is 42.75 inches.
• Ships at approximately 8.8 pounds.

Frequently Asked Questions

What finish does this 590A1 use? Black parkerized steel for added corrosion resistance.

What is the magazine capacity? 8+1 rounds, higher than the base 590A1 configuration.

Buy the Mossberg 590A1 Shotgun

A straightforward, parkerized duty-grade platform is exactly what this 590A1 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.