GG&G Mossberg 500 & 590 Side Saddle Shell Holder Review

The GG&G Mossberg 500 & 590 Side Saddle Shell Holder: First Use to Final Thoughts

As someone who has spent over a decade deeply entrenched in the world of gear, from the demanding environments of outdoor expeditions to the precise demands of workshops, labs, and rugged field applications, I approach new equipment with a critical eye. My constant companion has been the need for reliability, efficiency, and a tangible improvement in function. It was this drive for enhanced preparedness that led me to seek out a more robust and accessible method for carrying spare ammunition for my Mossberg shotguns, specifically my trusted 500 and 590 platforms. After some research and consideration of various options, the GG&G Mossberg 500 & 590 Side Saddle Shell Holder emerged as a strong contender, promising a no-nonsense solution to a common problem.

The need became particularly acute during extended range sessions and tactical training exercises. Fumbling with individual shells or a loose dump pouch simply wasn’t cutting it when seconds mattered, and smooth transitions were paramount. While I considered simpler elastic shell loops and even some bulkier polymer designs, the reputation of GG&G for producing quality, American-made firearm accessories, combined with the specific mounting system of this model, made it stand out. My initial impression upon unboxing was one of solid, purposeful engineering. The aircraft-grade aluminum and Mil-Spec anodizing spoke of a commitment to durability, a welcome change from some of the flimsier alternatives I’d encountered. This immediately instilled a sense of confidence, a feeling that this wasn’t just another accessory, but a tool designed to perform under pressure.

Real-World Testing: Putting GG&G Mossberg 500 & 590 Side Saddle Shell Holder to the Test

First Use Experience

My initial testing of the GG&G Mossberg 500 & 590 Side Saddle Shell Holder took place at my local indoor shooting range, a controlled environment ideal for assessing installation and initial functionality. The installation process was remarkably straightforward, as advertised. It involved removing the trigger pin and ejector replacement bolts and substituting them with the ones provided by GG&G. This truly took only a few minutes, and more time was spent reading the instructions than actually performing the task. The non-marring backing plate was a thoughtful touch, ensuring that the receiver’s finish remained unblemished, a detail that seasoned users will appreciate.

During this first session, I focused on the speed and ease of reloading. The unique 15-degree angle of the shell retention system proved immediately beneficial. Whether I was performing a tactical reload into the magazine tube or a “slingshot” reload directly into the chamber, the shells presented themselves in a natural, ergonomic fashion. The retention system held the shells snugly enough that I had no concerns about them falling out during the dynamic movements associated with a drill, yet they were still accessible with a firm pull. This balance is crucial, and GG&G hit it squarely.

Extended Use & Reliability

Over the subsequent months, this side saddle has seen consistent use across various scenarios, including more demanding stress drills and even a few hunting trips where quick follow-up shots might be necessary. Its performance has remained consistently reliable. The 6061-T6 aluminum construction, finished with Type III hard anodization, has shrugged off minor bumps and scrapes without showing any significant wear. The durable, oil-resistant, replaceable shotshell retention system has also held up exceptionally well; there’s no sign of the material degrading or losing its elasticity, which has been a problem with other shell carriers I’ve used in the past.

In terms of maintenance, the GG&G Mossberg 500 & 590 Side Saddle Shell Holder requires virtually none beyond a quick wipe-down if it gets dusty or muddy. Its mounting system, which replaces the factory pins, is robust and shows no signs of loosening or shifting, even after repeated cycling of the shotgun and being stored in a scabbard. Compared to some of the elastic band-based shell holders I’ve used previously, which tend to stretch out and lose their grip over time, this GG&G product feels like it’s built to last a lifetime, a sentiment echoed by the manufacturer’s Lifetime Warranty.

Breaking Down the Features of GG&G Mossberg 500 & 590 Side Saddle Shell Holder

Specifications

The GG&G Mossberg 500 & 590 Side Saddle Shell Holder is offered in two configurations: a 4-round model (Model 1512) and a 6-round model (Model 1515). Both are designed to hold 12-gauge ammunition, a standard for most tactical and hunting shotguns. The primary material is 6061-T6 aluminum, a lightweight yet incredibly strong alloy commonly used in aerospace and high-performance applications. This is then finished with a Type III hard anodized black coating, meeting Mil-Spec standards, which provides excellent resistance to abrasion and corrosion.

The overall length of the unit is approximately 6.5 inches, and it weighs in at a mere 5.5 oz. This minimal weight addition is a significant advantage, particularly for a platform like the Mossberg 500/590 where weight distribution and balance are critical. The attachment type is a secure side mount, utilizing steel trigger pin and ejector replacement bolts for a rock-solid fit directly to the receiver. The country of origin for this product is the USA, which for many consumers, is a mark of quality and ethical manufacturing.

Performance & Functionality

The core function of the GG&G Mossberg 500 & 590 Side Saddle Shell Holder is to provide quick and reliable access to spare ammunition. In this regard, it performs exceptionally well. The 15-degree cant is a standout feature, facilitating a fluid motion for both bottom loading the magazine tube and top loading the chamber. This subtle but effective angle drastically reduces the dexterity required for a fast reload, especially under stress. The retention system is designed to hold shells securely in either a base-up or base-down position, accommodating various shooter preferences and tactical reloading techniques.

The only minor performance quibble I’ve encountered, and noted by other users, is that the retention can be very snug, especially when new. For the first few dozen reloads, the last couple of shells in the 6-round model can require a slightly more deliberate pull, particularly if you have smaller hands or are wearing gloves. However, this tightness is a double-edged sword; it means the shells are absolutely secure. With continued use, the retention system does loosen up slightly, becoming easier to access without sacrificing security. For home defense scenarios, this secure fit is arguably a benefit, preventing accidental shell loss.

Design & Ergonomics

The design of the GG&G Mossberg 500 & 590 Side Saddle Shell Holder is a prime example of form following function. The use of aircraft-grade aluminum not only contributes to its durability but also allows for ergonomic design elements, including lightning cuts for weight reduction. These cuts, while subtle, reduce mass without compromising structural integrity. The finish is a deep, matte black that blends well with the shotgun’s receiver, giving it a factory-installed look rather than an aftermarket appendage.

Ergonomically, the side saddle integrates seamlessly with the shotgun’s operation. Its profile is low enough that it doesn’t significantly impede shouldering the weapon or the operation of accessories like weapon lights mounted on the forend. The placement of the shells at the 15-degree angle feels natural and intuitive, minimizing the need to reorient your hand during a reload. The non-marring backing plate is a testament to GG&G’s attention to detail, protecting the firearm’s finish.

Durability & Maintenance

The durability of this side saddle is, in a word, exceptional. The 6061-T6 aluminum is inherently resistant to dents and impacts, and the Mil-Spec hard anodizing provides a robust barrier against scratches and corrosion. I’ve had it bump against doorways and other gear without any noticeable damage, which is crucial for equipment intended for use in demanding environments. The replaceable shotshell retention system is also built for longevity and is designed to be swapped out if it ever does wear out, though mine shows no signs of needing this service yet.

Maintenance is minimal. A damp cloth or a soft brush is usually all that’s needed to keep it clean. If it gets particularly dirty, a mild soap and water solution followed by thorough drying is sufficient. There are no intricate parts or mechanisms that require special lubrication or attention. The design is inherently simple and robust, which translates directly into ease of maintenance and long-term reliability.

Accessories and Customization Options

The GG&G Mossberg 500 & 590 Side Saddle Shell Holder comes as a complete kit with all necessary hardware for installation, including the steel trigger pin and ejector replacement bolts, along with a washer. There are no additional accessories that are typically bundled with this particular product. However, the side saddle itself offers a degree of customization in how you load it. As mentioned, shells can be retained base up or base down, allowing users to tailor their reload technique to their preference.

The primary customization comes from the availability of the 4-round and 6-round versions, allowing users to select the capacity that best suits their needs and shotgun configuration. For instance, on shorter-barreled shotguns like the Mossberg Shockwave, the 4-round version might offer a better balance. The product is also designed to be compatible with the firearm itself, meaning it doesn’t interfere with other standard accessories like slings or aftermarket stocks, as long as they don’t directly obstruct the side saddle’s mounting points.

Pros and Cons of GG&G Mossberg 500 & 590 Side Saddle Shell Holder

Who Should Buy GG&G Mossberg 500 & 590 Side Saddle Shell Holder?

The GG&G Mossberg 500 & 590 Side Saddle Shell Holder is an ideal upgrade for any owner of a Mossberg 500 or 590 series shotgun who prioritizes rapid, reliable ammunition access. This includes tactical operators, home defense enthusiasts, competitive shotgun shooters, and serious hunters who may find themselves in situations requiring quick reloads. If you value robust construction, a secure mounting system that won’t damage your firearm’s finish, and an ergonomic design that enhances shooting performance, this is an excellent choice.

However, individuals looking for the absolute cheapest solution or those who prefer a bulkier, more traditional ammo pouch might find other options more appealing. Shooters who frequently use sub-gauge inserts or highly specialized ammunition that might not perfectly conform to standard 12-gauge shell dimensions should verify compatibility. For those prioritizing extreme compactness over capacity, the 4-round version might be preferable. Essential complementary items would include quality 12-gauge ammunition, a good cleaning kit for the shotgun itself, and perhaps a durable shotgun scabbard or case that can accommodate the added profile of the side saddle.

Conclusion on GG&G Mossberg 500 & 590 Side Saddle Shell Holder

The GG&G Mossberg 500 & 590 Side Saddle Shell Holder is, without question, one of the finest side saddle systems available for Mossberg shotguns. Its robust construction, innovative mounting solution, and thoughtfully engineered shell retention angle combine to create a product that significantly enhances the functionality of the firearm. While the initial snugness of the shell retention might require a short break-in period or a bit more effort for extraction, this minor inconvenience is far outweighed by the absolute security it provides and the ease of access once broken in. The price of $84.49 reflects the premium materials, meticulous manufacturing, and the overall quality of the product, and in my experience, it is absolutely justified.

For anyone looking to elevate their Mossberg shotgun’s reload capabilities without compromising firearm integrity or introducing unnecessary weight, I wholeheartedly recommend the GG&G Mossberg 500 & 590 Side Saddle Shell Holder. It’s a smart investment that delivers tangible performance benefits, built to last and designed to perform when it matters most. This is not just an accessory; it’s an integral part of an effectively equipped shotgun.