Mossberg 590M 12 Gauge 18.5in Mag-Fed Pump Shotgun

The Mossberg 590M is a magazine-fed variant of Mossberg's time-tested 590 pump-action platform configured for 12 gauge use. This configuration pairs an 18.5-inch heavy-walled barrel with an over-bar heat shield and ghost-ring sights for robust utility in duty, competition, and home-application contexts. A synthetic black stock and removable magazine provide a durable, serviceable package.

Key Specifications

• Manufacturer: Mossberg.
• Model: 590M.
• Gauge: 12 Gauge.
• Action: Pump Action.
• Barrel length: 18.5 inches.
• Barrel: Heavy-walled with heat shield.
• Chamber: 2.75 inch.
• Stock: Synthetic, black.
• Sights: Ghost ring rear with fiber‑optic front.
• Magazine included: 1 × 10‑round removable magazine.

The 590M's magazine-fed layout simplifies reloads and centralizes mass for predictable balance, while the heavy-walled barrel and steel construction support consistent, repeatable operation. Its configuration is appropriate for responsible users seeking a durable, serviceable pump-action platform with magazine-fed convenience.