Mossberg 590RM 12 Gauge Pump-Action Shotgun 11.5″ Barrel FDE 10+1 Round

The Mossberg 590RM is a 12 gauge pump-action shotgun built around the first production double-stack magazines designed for pump-action shotguns. The rotary magazine system offers greater capacity relative to length compared to traditional tube-fed designs, and the 590RM pairs this feeding system with a suite of features that set it apart from conventional pump shotguns.

The 590RM is chambered for 2.75" shells and features an 11.5" Parkerized barrel with an integrated heat shield. A cylinder bore choke is installed, and the Accu-Choke system allows for choke changes. Total capacity is 10+1 rounds. The overall length measures 30.5 inches, and the shotgun weighs 7.6 pounds.

Key Features

• 12 Gauge, 2.75" chamber, pump-action
• 11.5" Parkerized barrel with integrated barrel/heat shield combination
• Double-stack rotary magazine with 10+1 capacity
• Ambidextrous rotary safety selector
• Premium Cerakote polymer-ceramic receiver with abrasion, wear, and anti-corrosion properties per manufacturer
• Chisel Folding Stock Mount — allows the adjustable stock to fold completely along the reverse side of the receiver
• 8-Position adjustable stock with MOE+ pistol grip, interchangeable recoil pad, and 2 QD ports; LOP adjustable from 12.5" to 16.5"
• Flat profile trigger with smooth, crisp break per manufacturer
• Enlarged beveled loading port with exposed follower
• Top Picatinny rail optimized for optics
• Compact, ergonomically designed forend
• Overall length: 30.5" | Weight: 7.6 lbs

The 590RM is listed under Mossberg's security-use category. The FDE (Flat Dark Earth) color finish is reflected in this configuration alongside the black buffer tube and stock components.

ICB Firearms is a family-owned retailer serving customers in Saint Clair Shores, Michigan and nationwide. Questions about this Mossberg model or availability are welcome — contact us directly for personalized assistance.