Mossberg 590A1 12 Gauge | 20″ Barrel | MFG# 51668

The Mossberg 590A1 Tactical is a 12 gauge pump-action shotgun built for duty-level durability and repeated use. It features a 20″ heavy-walled parkerized barrel, ghost-ring sights, and a SpeedFeed synthetic stock with an internal storage compartment. The model is engineered with steel components and ambidextrous controls to suit a variety of handling preferences.

Well-suited for law-enforcement/duty applications and tactical or range training, the 590A1 balances rugged construction with service-oriented features such as dual extractors and a positive steel-to-steel lockup.

Product Specifications

• The manufacturer is Mossberg.
• The model is 590A1.
• The gauge is 12 Gauge.
• The action type is Pump Action.
• The barrel measures 20 inches and is heavy-walled.
• The chamber accepts 3″ shells.
• The listed capacity is 8+1 (one in the chamber, eight in the magazine tube).
• The barrel finish is Black Parkerized.
• The stock material is Black synthetic SpeedFeed with an internal storage compartment.
• The sights are Ghost Ring rear with a bead front.
• The choke configuration is a fixed cylinder bore.
• The safety is a Ambidextrous Top Tang style.
• The weapon weight is approximately 7.25 lbs.
• The barrel type is Heavy-Walled.
• The UPC is 015813516686.

Built with service-grade components and a SpeedFeed stock, this 590A1 configuration focuses on consistent function and durability. Its heavy-walled barrel and parkerized finish resist wear from regular use, while the ghost-ring sighting system supports quick, repeatable aiming in training and duty contexts. The internal stock storage adds practical utility for spare shells or small items.

Many agencies and users regard the 590A1 as a reliable duty platform; it is widely cited for its durability and service-oriented design.

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