Mossberg 590S 12 Gauge 20-Inch Optic-Ready Shotgun

The Mossberg 590S is a 12-gauge pump-action shotgun built around flexible shotshell compatibility. Its 3-inch chamber cycles 1.75-inch, 2.75-inch, and 3-inch shells interchangeably, while the optic-ready receiver and bead sight support different sighting preferences.

The shotgun features a 20-inch matte-blued steel barrel, black synthetic stock, fixed magazine tube, and a cylinder-bore Accu-Choke system. Standard pump-action components include dual extractors, twin action bars, steel-to-steel lockup, and an anti-jam elevator.

Key Specifications

• The shotgun uses a 12-gauge chambering.
• The action is pump-action for manually cycling shotshells.
• The chamber measures 3 inches and cycles 1.75-inch, 2.75-inch, and 3-inch shells.
• The barrel measures 20 inches and has a matte-blued finish.
• The barrel uses a cylinder-bore Accu-Choke system.
• The receiver is optic-ready and paired with a bead front sight.
• The stock is a black synthetic fixed stock with an M-Lok forend.
• The overall length is 41 inches.
• The length of pull is 13.87 inches with a fixed configuration.
• The listed weight is 7.25 pounds.

With its versatile shell compatibility, straightforward pump-action design, optic-ready receiver, and durable matte-blued finish, the 590S offers a practical platform for shooters who value adaptable configuration and clear, dependable specifications.

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