Mossberg 590S | 12 Gauge | 18.5in Threaded | MFG# 51609

The Mossberg 590S is a compact, pump-action 12 gauge built for configurable duty and range work. It accepts 1.75″, 2.75″ or 3″ shells interchangeably and is offered with an 18.50-inch heavy-walled threaded barrel for accessory compatibility. The receiver is drilled and tapped and configured optic-ready (Shield RMSc footprint) to accept a variety of compact red-dot optics. This model pairs a fixed black synthetic stock and ambidextrous controls for straightforward handling in operational and training environments.

Product Specifications

• The gauge is 12 Gauge.
• The action type is Pump-Action.
• The barrel measures 18.50 inches.
• The barrel is described as heavy-walled.
• The barrel finish is Matte Blue.
• The chamber is 3 inches.
• The stock is fixed black synthetic.
• The sights are a bead front and the receiver is optic-ready (Shield RMSc footprint).
• The safety is ambidextrous.
• The receiver is drilled & tapped.
• The shotgun includes Accu-Choke system with a cylinder bore choke installed.
• The weight is 6.75 lbs.
• The overall length is 37.75 inches.
• The length of pull is 12-13 inches (adjustable).
• The UPC is 015813516099.

The 590S blends service-oriented features — a rugged heavy-walled threaded barrel, a drilled-and-tapped optic-ready receiver and ambidextrous controls — into a compact, manageable package. Its ability to cycle mixed shell lengths without an adaptor and its adjustable length of pull make it adaptable for a range of users and mission profiles. For someone looking for a dependable pump shotgun for duty, training, or utility use, this model presents a sensible balance of features and ergonomics.

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