The Mossberg 590 Mariner in 12 gauge (brand part no. 50299) is finished in a silver Marinecote coating built to resist corrosion in marine and coastal defensive environments. Mossberg equips the Mariner with dual extractors, positive steel-to-steel lockup, twin action bars, and an anti-jam elevator for smooth cycling, plus an ambidextrous top tang safety for left- or right-handed operation. The shotgun ships with a pistol grip conversion kit alongside the standard synthetic stock, and a 20-inch cylinder bore barrel rounds out a package built for prolonged personal-defense use. Among pump-action shotguns, the 590 Mariner favors buyers who want corrosion resistance and stock-configuration flexibility in one package.

Key Specifications

• Chambered in 12 gauge.
• Operates as a pump-action shotgun.
• Features a 20-inch barrel.
• Feeds from a magazine with an 8+1-round capacity.
• Finished in silver Marinecote for corrosion resistance.
• Runs an ambidextrous top tang safety.
• Fitted with a cylinder bore choke.
• Includes a pistol grip conversion kit alongside the standard stock.
• Ships at approximately 8.75 pounds.

Frequently Asked Questions

Does this shotgun include a pistol grip option? Yes, a pistol grip conversion kit ships alongside the standard synthetic stock.

Is the finish corrosion resistant? Yes, the silver Marinecote coating is built for marine and coastal environments.

Buy the Mossberg 590 Mariner Shotgun

Marine-grade corrosion resistance with stock-configuration flexibility is exactly what the 590 Mariner delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.