The MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin Made a Bold First Impression
The MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin isn’t just an accessory; it’s a game-changer for the Mossberg 590M platform. This high-capacity, double-stack magazine promises to redefine the shotgun experience, offering increased firepower and a unique balance. As a seasoned outdoor and tactical gear specialist, I was immediately intrigued by the promise of enhanced capacity and performance and eager to see if it lived up to the hype.
My primary motivation for seeking out this magazine was to extend the effective engagement time with my 590M without constant reloads. The standard capacity simply felt insufficient during simulated home defense scenarios on my property. I wanted a more robust solution that provided a significant advantage without sacrificing handling.
Upon unboxing, the MOSS 590M MAG 20 ROUND impressed me with its solid construction and aggressive styling. The heavy-duty polymer body and black oxide finished steel components exuded quality. Its weight, while noticeable, felt reassuringly robust, hinting at the durability needed for demanding tactical applications.
Compared to the 5 and 10-round magazines I already owned, the MOSS 590M MAG 20 ROUND was substantially larger, but surprisingly, not as unwieldy as I initially anticipated. Competitor’s single-stack designs often result in magazines that extend even further below the receiver. I chose the MOSS 590M MAG 20 ROUND specifically for its higher capacity in a shorter overall package, hoping to maintain reasonable balance and maneuverability.
Initially, I was excited by the potential for increased firepower and improved balance, but also slightly apprehensive about potential feeding issues common with high-capacity shotgun magazines. My first impression was one of cautious optimism mixed with a healthy dose of curiosity, ready to put this behemoth to the test.
Real-World Testing: Putting MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin to the Test
First Use Experience
I tested the MOSS 590M MAG 20 ROUND at my private shooting range, simulating various home defense drills and target acquisition exercises. The range offered a controlled environment to push the magazine’s limits with different types of 12-gauge ammunition. It ranged from birdshot for practice to buckshot for simulated threat scenarios.
The MOSS 590M MAG 20 ROUND performed surprisingly well even in slightly dusty conditions. I was expecting potential malfunctions given the double-stack design, but it cycled smoothly and reliably. The increased weight was noticeable, but the balance felt better than anticipated, aiding in recoil management.
The learning curve was minimal; after a few practice reloads, the magazine became relatively intuitive to use. The external molded design provided a secure grip. One initial issue was the force required to fully seat a fully-loaded magazine; this improved slightly after the first few loading/unloading cycles.
Extended Use & Reliability
After several months of regular use, including approximately 500 rounds fired, the MOSS 590M MAG 20 ROUND has proven to be remarkably durable and reliable. There are no visible signs of significant wear and tear on the polymer body or steel feed lips. The black oxide finish on the steel components has held up well, showing only minor scuff marks.
Cleaning and maintenance are straightforward due to the removable floor plate. I disassemble and clean the magazine after each range session, ensuring reliable feeding. The proprietary self-lubricating polymer magazine body material seems to resist fouling and makes cleaning easier.
Compared to previous experiences with other high-capacity shotgun magazines (specifically single-stack designs for different platforms), the MOSS 590M MAG 20 ROUND significantly outperforms them in terms of capacity-to-size ratio and overall reliability. It exceeded my expectations, proving to be a worthy addition to my 590M.
Breaking Down the Features of MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin
Specifications
The MOSS 590M MAG 20 ROUND is a 12-gauge shotgun magazine designed specifically for the Mossberg 590M platform. Its defining characteristic is its 20-round capacity, offering a substantial increase in firepower compared to standard shotgun magazines. The magazine is constructed with hardened steel feed lips over-molded to steel shell ramps, ensuring reliable feeding and durability.
The magazine body is made of a proprietary self-lubricating polymer, contributing to smooth cycling and ease of maintenance. It also uses a heavy-duty ASTM-A-228 music wire magazine spring, designed for consistent pressure and long-term reliability. All steel components feature a tough black oxide finish, providing corrosion resistance.
The removable floor plate allows for easy cleaning and maintenance. It accepts 2.75″ shotshells. The MOSS 590M MAG 20 ROUND is designed and manufactured as an OEM (Original Equipment Manufacturer) product by Mossberg, ensuring proper fit and function with the 590M shotgun.
Performance & Functionality
The MOSS 590M MAG 20 ROUND performs its primary function exceptionally well: reliably feeding 12-gauge shells into the Mossberg 590M. Its reliability is a standout feature. I experienced virtually no failures to feed during testing with various types of ammunition, solidifying its reliability.
The magazine’s capacity dramatically extends engagement time, offering a significant tactical advantage in defense scenarios. Its primary weakness is its size and weight, making the shotgun somewhat unwieldy in tight spaces. Despite this, the increased firepower and relatively balanced feel largely offset this drawback.
The MOSS 590M MAG 20 ROUND largely meets expectations; however, the initial stiffness when loading the first few rounds was a minor annoyance that dissipated with use.
Design & Ergonomics
The MOSS 590M MAG 20 ROUND features a robust and functional design. The heavy-duty polymer body and steel components inspire confidence in its build quality. Its weight is substantial, contributing to felt recoil reduction.
The magazine is relatively user-friendly, though loading 20 rounds requires considerable thumb pressure, especially when new. The external molded design offers a secure grip for efficient magazine changes. There is a slight learning curve, primarily related to efficiently loading and seating the fully-loaded magazine.
Durability & Maintenance
Given its construction and materials, the MOSS 590M MAG 20 ROUND is built to last. The hardened steel feed lips and robust polymer body should withstand significant abuse. Regular cleaning and lubrication of the internal components will ensure long-term reliability.
The removable floor plate simplifies maintenance and allows for easy inspection and cleaning of the magazine’s internal components. Spare parts, such as replacement springs, are readily available from Mossberg, ensuring continued usability.
Accessories and Customization Options
The MOSS 590M MAG 20 ROUND doesn’t require any specific accessories for operation, as it is a self-contained unit. Its main customization aspect is choosing between different capacity magazines (5, 10, 15, and 20-round) to best suit the user’s needs and preferences. It is compatible with any Mossberg 590M shotgun chambered in 12-gauge.
Compatibility with aftermarket accessories is limited, as it is a magazine. However, some users may choose to add magazine pouches or carriers to their tactical gear for easier access and transport of spare magazines.
Pros and Cons of MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin
Pros
- Substantially increased capacity (20 rounds) provides extended engagement time.
- Reliable feeding with various types of 12-gauge ammunition.
- Durable construction with hardened steel feed lips and a robust polymer body.
- Improved balance compared to some competing high-capacity magazines.
- Relatively easy to clean and maintain due to the removable floor plate.
Cons
- Significant weight and size can make the shotgun unwieldy in tight spaces.
- Loading 20 rounds requires considerable thumb pressure, especially when new.
- The initial stiffness when loading the first few rounds can be annoying.
Who Should Buy MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin?
The MOSS 590M MAG 20 ROUND is perfect for home defense enthusiasts, tactical shooters, and those seeking extended firepower in a Mossberg 590M platform. It is ideal for individuals who prioritize high capacity and reliability over compact size and lightweight handling. It also suits competitive shooters participating in practical shotgun events where magazine capacity is a factor.
This product might not be suitable for individuals who prioritize maneuverability in tight spaces or those who find the weight of a fully loaded 20-round magazine cumbersome. It would also be less appealing to hunters who prefer lighter, more streamlined shotguns for field use. Those with limited hand strength might find loading the magazine to full capacity challenging.
Must-have accessories include a quality magazine pouch or carrier for easy access to spare magazines and a Mossberg 590M shotgun specifically designed to accept box magazines. High-quality 12-gauge ammunition appropriate for the intended use is also essential.
Conclusion on MOSS 590M MAG 20 ROUND – 12 Gauge Caliber, 20 Rounds, Black, OEM Origin
The MOSS 590M MAG 20 ROUND is a worthwhile upgrade for any Mossberg 590M owner seeking a significant increase in firepower. Its reliability, durable construction, and manageable balance make it a compelling choice despite its size and weight. The price, at around $100, is justified given the enhanced capabilities it provides.
I would personally recommend the MOSS 590M MAG 20 ROUND to anyone looking to maximize the potential of their Mossberg 590M for home defense or tactical applications. If you own a 590M and want serious firepower, this is the magazine you need. Equip your 590M today and experience the confidence that comes with having 20 rounds at your fingertips!