Mossberg 590M | 12 Gauge | 18.5in | 50206

The Mossberg 590M is a magazine-fed variant of the 590 pump-action platform designed to combine traditional pump reliability with detachable-magazine convenience. It ships with a removable magazine and a heavy-walled 18.5″ barrel fitted with a heat shield. The rifle-length ergonomics and accessory-ready design make it suited for tactical and competition applications.

Applications: Tactical use and competitive shotgun events where rapid magazine changes and a robust action are desired.

Product Specifications

• The gauge is 12 Gauge.
• The action type is Pump Action.
• The barrel measures 18.5 inches and is described as heavy-walled with a heat shield.
• The chamber accepts 2.75" shells.
• The barrel finish is listed as Matte/Blued.
• The stock material is Black Synthetic in a fixed field-style configuration.
• The overall length is 39.5 inches.
• The length of pull is 13.87 inches.
• The sights include a Ghost Ring rear and a Fiber Optic front sight.
• The choke configuration is listed as Cylinder / Accu-Choke (Cylinder bore supplied).
• The package includes 1 x 10-Round removable magazine.
• The magazine type is Removable.
• The safety is a Tang safety.
• The receiver/parts material is listed as Steel.
• The UPC is 015813502061.

The 590M blends magazine-fed handling with Mossberg’s established pump-action features, including twin action bars and dual extractors. Its accessory-ready stance, heat-shielded heavy barrel and sight set make it a practical choice where quick magazine changes and durable construction matter.