Mossberg Double-Stack Magazine for Mossberg 590M Mag-Fed Shotgun 20/rd

The Mossberg Double-Stack Magazine for Mossberg 590M Mag-Fed Shotgun delivers a 20-round capacity that modern tactical shotgun operations demand. Designed specifically for law enforcement, military, and civilian tactical users, this magazine addresses the core limitation of traditional tube-fed shotguns—extended reload times under stress. The 590M platform represents a fundamental shift in shotgun ergonomics, and this double-stack magazine is the foundation of that system's speed advantage in dynamic entry, breaching, and sustained-fire scenarios.

Built to Mossberg's exacting specifications, the double-stack magazine houses 20 rounds in a compact staggered configuration that minimizes profile while maintaining reliable feeding geometry. The robust design weighs approximately 1.94 lbs and measures 4.5 x 2.6 x 13 inches—dimensions engineered for a balanced, ergonomic grip without excessive bulk during tactical movement. The magazine body features reinforced feed lips and anti-tilt followers that ensure positive round presentation to the chamber, critical for reliability under the harsh cycling demands of tactical shotgun use.

Quick-change functionality allows operators to transition magazines in seconds, sustaining firepower in multi-threat engagements without fumbling with tube-loading mechanics. This magazine is compatible exclusively with the Mossberg 590M mag-fed platform and integrates seamlessly into its lower receiver slot. Tactical professionals operating the 590M in various scenarios will find this magazine enhances their operational effectiveness.