Mossberg 590RM 12 Gauge 18.5 in Mag-Fed Shotgun 10-Rd

About this product

The Mossberg 590RM is a pump-action 12-gauge shotgun built around a rotary safety selector and a magazine-fed configuration. It features an 18.5-inch barrel with an integrated heat shield, Magpul MBUS 3 adjustable sights, and a five-position adjustable stock with a Magpul MOE pistol grip. The design integrates a top Picatinny rail and a detachable magazine for practical handling in compact applications. The 590RM is intended for security and tactical use where durable construction and straightforward operation are priorities.

Key Specifications

• The model is 590RM.
• The gauge is 12 Gauge.
• The action is a Pump Action.
• The barrel measures 18.5 inches.
• The chamber accepts 2.75″ shells.
• Includes a 1 x 10-Round detachable magazine.
• Equipped with Magpul MBUS 3 adjustable sights.
• Features a 5-position adjustable stock with Magpul MOE pistol grip.
• The barrel includes an integrated heat shield.
• The receiver is aircraft-grade aluminum.

Purpose-built for tactical and security applications, the 590RM combines magazine-fed convenience with proven pump-action reliability. Its compact barrel, adjustable ergonomics and rugged components make it a practical choice for users who require durable, repeatable performance and straightforward features in a ready-to-configure platform.