Mossberg 590A1 | 12 Gauge | 18.5 in | MFG# 50766

The Mossberg 590A1 is a purpose-built pump-action shotgun engineered to MIL-SPEC construction for consistent, long-term service. This configuration features an 18.5-inch heavy-walled barrel, Parkerized black finish, a black synthetic stock and an M-LOK equipped forend for modular accessory mounting. It is commonly employed for duty/patrol use and for training on the range where robust, repeatable performance is required.

Product Specifications

• The gauge is 12 Gauge.
• The action is Pump Action.
• The barrel measures 18.5 inches and is heavy-walled for durability.
• The chamber accepts 3″ shells.
• The barrel finish is Black Parkerized.
• The stock is a black synthetic material paired with an M-LOK forend.
• The sighting system is a bead front sight.
• The choke type is Cylinder Bore.
• The safety is an Ambidextrous Top Tang.
• The length of pull is 13.87 inches.
• The listed weight is 7 lbs.
• The barrel type is Heavy-Walled.
• Included features include a metal trigger guard & safety and an M-LOK forend.
• The ATF model designation is M590A1.
• The UPC is 015813507660.

Rugged and straightforward, this 590A1 configuration is intended for users who prioritize durable construction and a proven manual-action platform. The heavy-walled barrel and reinforced controls reflect a design focused on longevity and serviceability, while the M-LOK forend offers modern accessory flexibility for optics, lights, and training aids. For professionals and serious enthusiasts who want a no-nonsense, heavy-duty pump shotgun, this model provides a solid foundation.

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