Mossberg 590S 12 Gauge Pump Shotgun, 20 Inch, Optic Ready

Description

Built for range use and security applications, the Mossberg 590S is a 12 gauge pump-action shotgun with a 20 inch barrel and a fixed synthetic stock. Its 3 inch chamber supports 1.75 inch, 2.75 inch, and 3 inch shells, and the receiver is optic ready with a cover plate installed. We stock this configuration for shooters who want a full-length pump shotgun with flexible shotshell compatibility.

Key Specifications

• The shotgun uses a pump-action operating system with a tang-mounted safety.
• It is chambered in 12 gauge for use with compatible shotshells.
• The barrel measures 20 inches and is made from steel.
• The 3 inch chamber cycles 1.75 inch, 2.75 inch, and 3 inch shells.
• The barrel carries a matte blued finish for a subdued exterior treatment.
• The shotgun has a cylinder bore with an Accu-Choke system.
• Overall length is 41 inches for a full-length shotgun configuration.
• Unloaded weight is 7.25 pounds.
• The receiver is optic ready and includes a cover plate when an optic is not mounted.
• The shotgun combines a fixed black synthetic stock with a bead front sight.

The 590S design accommodates multiple shotshell lengths without requiring a separate short-shell adapter, giving the shooter more choice in ammunition selection. Its dual extractors, twin action bars, steel-to-steel lockup, and redesigned elevator are specified as part of the pump-action system. The fixed stock and 20 inch barrel give this model a straightforward layout, while the optic-ready receiver leaves room for a compatible sighting setup. The Mossberg 590S keeps the focus on practical controls, flexible chambering, and familiar pump-shotgun operation.