Mossberg 590M Shotgun: Innovative Double-Stack Design

When a shotgun is part of your defensive plan, consistency isn’t optional—it’s the whole game. Gear has to feed smoothly under pressure, shrug off hard use, and keep running when lesser kit chokes. That’s why magazine design matters as much as the gun it supports.

MOSSBERG 590M

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Why a doublestack magazine changes the equation

The 590M platform is built around speed and repeatable performance. The patented doublestack design on this magazine tightens that loop even further. Unlike traditional shotgun feeding systems that rely on tube mags and careful shell management, this doublestack configuration is purpose-built for mag-fed 590M shotguns, balancing capacity and controllability. Shells feed in a compact footprint, cutting down the bulk that usually comes with higher round counts on a 12-gauge platform.

That doublestack geometry is more than a buzzword—it’s a deliberate engineering choice. It stabilizes shell presentation while keeping center of gravity closer to the hands, which helps the gun track clean. The result is a magazine that doesn’t just hold shells; it manages them efficiently so you can stay focused on sight picture and movement, not fighting the feed path.

The anatomy of reliability

Hardened steel feed lips

Feed lips are the gatekeepers of reliability. On this magazine, they’re hardened steel, not an afterthought. Steel feed lips resist spreading, deformation, and impact damage. When the gun slams into barricades or gets dropped on gravel during a course, they keep their shape—and that preserves the precise geometry needed for consistent shell release.

Overmolded shell ramps

Self-lubricating polymer body

The proprietary, self-lubricating polymer used in the magazine body cuts friction where it counts. That means fewer hang-ups from debris or humidity, and less dependence on constant oiling. The polymer construction also keeps weight in check without sacrificing strength, so the mag remains nimble for reloads and resists the kind of flex that can cause misalignment under pressure.

Grip you can trust

An easy-grip molded exterior gives you purchase in rain, sweat, or with gloves on. It sounds simple, but under stress, tactile indexing can be the difference between a clean insert and a fumble. The shape naturally guides the hand, keeping reloads positive and fast—exactly what you want in a defensive setup or on the clock.

Removable floor plate

Magazines take abuse. The removable floor plate gives you a fast way to strip the mag, sweep out grit, and get back in the fight. This isn’t just about cleanliness; it’s about preserving consistent feed pressure and preventing the slow creep of stoppages that come from neglect. Maintenance should be simple. Here, it is.

Black oxide on steel components

Every steel component wears a tough black oxide finish. That’s corrosion resistance built for real weather, vehicle carry, and range days in the dust. It also reduces reflectivity—quiet professionalism in a finish that won’t scream for attention.

Fit, purpose, and the Mossberg edge

Mossberg has a reputation in defensive shotguns for rugged, mission-first design. This magazine follows that lineage and is engineered exclusively for the 590M mag-fed shotgun family. That exclusivity matters: when the mag and the gun are designed to work as a system, you get better lockup, cleaner feeding, and fewer unknowns.

Model compatibility spans the 590M series, giving you options across configurations without guessing games. Whether you’re building out a home-defense shotgun, a patrol-ready setup, or a hard-use training gun, this mag slots cleanly into the role.

Performance where it counts

Training and defensive applications

In practical use, the doublestack layout balances capacity with maneuverability. For home defense, it minimizes reloads without turning the platform into a boat anchor. For training, it keeps the gun hot longer so you can work manipulations, patterning, and transitions without constantly feeding shells. The result is more reps that actually matter.

Materials that earn their keep

Every component supports the core mission: feed reliability under stress. The polymer body’s self-lubrication helps in cold, heat, or dusty ranges. The hardened steel feed lips keep alignment true after repeated insertions and impact. Overmolded ramps calm down the variability of different shell profiles. The removable floor plate makes cleaning fast, so your maintenance cycle stays short.

Price, value, and what you’re actually buying

At $92.69, you’re paying for a duty-grade magazine that’s purpose-built and proven in design. Cheaper gear exists, but it won’t buy down risk the same way. If your shotgun lives next to your bed, rides in a cruiser, or gets hammered in coursework, this is the kind of component that quietly prevents headaches.

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Who this magazine serves best

Home defenders

If your priority is a reliable defensive shotgun that stays consistent across different loads, this mag earns its space. The overmolded shell ramps and steel feed lips keep the feeding cycle steady during the moments that matter.

Law enforcement and security

For duty carry, the black oxide finish and durable body materials help the magazine resist corrosion and impact in real-world conditions. The grip texture supports clean changes around vehicles or in low-light environments.

Serious students of the gun

If you’re stacking classes and reps, a mag that’s easy to maintain, tough, and smooth to load will save time and frustration. The removable floor plate is a small detail with big payoff when your gear sees dirt, rain, and heavy round counts.

Practical notes from the range

Keep an eye on your magazine maintenance schedule just like you would with any hard-use component. Strip, wipe, and reassemble after heavy training days or exposure to sand and moisture. Inspect feed lips and the ramp area for debris. The design makes that easy, which is the point: fast maintenance equals a reliable gun.

Final look

This magazine embodies what a 590M was built to do: run. The patented doublestack architecture keeps the gun agile while feeding consistently. Hardened steel feed lips hold geometry under abuse. Overmolded ramps tame the quirks of shotgun shells. The proprietary self-lubricating polymer body reduces friction and weight, while the removable floor plate makes cleaning straightforward. Wrap it all in a black oxide finish on steel components, and you get a piece of equipment that feels calm under pressure—quiet, efficient, and purpose-driven.

If your standard is a shotgun that just works—no drama, no hesitation—this is the magazine built for that standard. It’s a simple choice for anyone who values reliability over theory and performance over guesswork. Check current availability

People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.