Mossberg 590S 12 Gauge Pump 20 in. M-LOK Ghost Rings

About this product

The Mossberg 590S is a full-size 12 gauge pump-action shotgun equipped with a 20 in. matte blued steel barrel and a black synthetic stock. Designed with an M-LOK compatible forend and ghost ring sights, it provides a practical sight picture and modular accessory options. The 590S accepts 1.75″, 2.75″ and 3″ shells and offers multiple capacity configurations depending on shell length.

Key Specifications

• The gauge is 12.
• The action is a pump action.
• The barrel length is 20 inches.
• The chamber accepts 3″ shells and is compatible with 1.75″ short shells.
• Capacity varies by shell length: 13+1 (1.75″ shells), 8+1 (2.75″ shells), or 7+1 (3″ shells).
• Sights are ghost ring type for fast target acquisition.
• The installed choke is cylinder bore and the shotgun uses the Accu-Choke system.
• The stock is black synthetic with a fixed pistol-grip style and an M-LOK compatible forend.
• The barrel finish is matte blued and the receiver is engraved (black anodized stainless appearance).

Built for dependable operation and adaptable capacity, the Mossberg 590S fits duty, home defense and range roles where reliability and straightforward function matter. Its M-LOK forend and ghost-ring sights make it a practical platform for shooters who value robust, no-nonsense performance and configurable accessories.

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