Mossberg 590S 12 Gauge 18.5 in. Optic-Ready Shotgun

The Mossberg 590S is a 12-gauge pump-action shotgun with an 18.5-inch heavy-walled barrel and matte blue finish. It cycles 1.75-inch, 2.75-inch, and 3-inch shells interchangeably without requiring a mini-shell adapter. The receiver is optic-ready for the Shield RMSc footprint and includes a bead front sight.

Key Specifications

• The gauge is 12 Gauge for compatibility with 12-gauge shotshells.
• The action is pump-action with dual extractors, twin action bars, and steel-to-steel lockup.
• The chamber accommodates 3-inch shells.
• The barrel measures 18.5 inches and uses a heavy-walled design.
• The barrel finish is matte blue.
• The shotgun uses an Accu-Choke system with a cylinder bore choke installed.
• The sight configuration includes a bead front sight and an optic-ready receiver.
• The safety is ambidextrous and top-mounted.
• The receiver is drilled and tapped for compatible mounting applications.
• The listed weight is 6.75 pounds.

With flexible shell compatibility, a durable heavy-walled barrel, and an optic-ready receiver, the Mossberg 590S offers practical configuration options in a compact pump-action platform. Its Accu-Choke system, ambidextrous safety, and familiar operating controls support straightforward handling and setup.

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