Mossberg 590A1 Pro 12 Gauge 18.5″ Magpul SGA

About this product

The Mossberg 590A1 Pro is a service-grade pump-action shotgun built for reliability in demanding conditions. This configuration features an 18.5″ heavy-walled Marinecote barrel, an optic-capable receiver with ghost-ring and front fiber-optic sights, and Magpul SGA furniture with adjustable length-of-pull. The design emphasizes robust construction and straightforward operation for duty, home, and range applications.

Key Specifications

• The shotgun is chambered for 12 Gauge for common 12ga loads.
• The action type is Pump Action for manual cycling.
• The barrel measures 18.50″ and is described as heavy-walled.
• The chamber accepts 3″ shells.
• The magazine capacity is 6+1 (tube magazine plus one in the chamber).
• The finish on barrel and receiver is Marinecote for corrosion resistance in wet environments.
• The stock is a Black Magpul SGA adjustable stock with spacers for user-adjustable length-of-pull.
• The sighting system is Ghost Ring with front fiber optic and an optic-ready receiver footprint.
• The overall length is 38.5″.
• The length of pull adjusts between 12.25″–14.25″.

Built to meet professional standards, the 590A1 Pro pairs rugged construction and practical features in a straightforward platform. The Marinecote finish and heavy-walled barrel support use in wet or corrosive environments while the Magpul SGA stock and ghost-ring sights make it adaptable to a variety of users and mission profiles. Its proven, service-oriented design provides dependable, low-complexity operation for those who prioritize durability and function.

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