Mossberg 590S Optic-Ready 12 Gauge 20″ Barrel

The Mossberg 590S is a tactical, optic-ready pump shotgun designed for flexible shotshell cycling and dependable operation in security and home-defense roles. It accepts a range of shotshell lengths and features Mossberg's standard pump-action controls and safety layout. The 590S ships with a fixed black synthetic stock and a 20" matte-blued barrel for a durable patrol-ready package.

Key Specifications

• Chambered in 12 Gauge.
• Operates as a pump-action shotgun.
• Accepts up to a 3" chamber and cycles 1.75", 2.75" or 3" shells interchangeably.
• Features a 20" barrel for balanced handling.
• Barrel and receiver finish is matte blued.
• Receiver is optic-ready to accept low-profile micro red-dot footprints.
• Equipped with an Accu-Choke system; a Cylinder Bore choke is installed.
• Stock is a fixed black synthetic design.
• Includes a bead front sight with a fixed rear sight.
• Weighs approximately 7.25 lbs.

The 590S blends Mossberg's proven pump-action platform with modern user-focused features like short-shell compatibility and an optic-ready receiver. Its combination of a synthetic stock, Accu-Choke system, and robust matte-blued metalwork makes it a practical choice for owners seeking a reliable, serviceable tactical shotgun with flexible ammunition handling.