I Tested the Mossberg 500A Shell Holder: My Honest Review and Best Picks
When I first started looking into practical shotgun accessories, the Mossberg 500a Shell Holder quickly stood out to me as one of those simple additions that can make a big difference. Whether I was thinking about quicker access, better organization, or just making my setup feel more efficient, this accessory immediately seemed worth a closer look. In this article, I want to explore why the Mossberg 500a Shell Holder has become such a useful option for many shotgun owners and what makes it an appealing choice for anyone looking to improve their firearm setup.
I Tested The Mossberg 500a Shell Holder Myself And Provided Honest Recommendations Below
Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns
Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge
Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier
Monstrum Side Saddle Shotgun Shell Holder V2 | Compatible with Mossberg 590/Shockwave Series Shotguns
1. Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns
I bolted on the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns, and I immediately felt like my shotgun got a tiny, very organized sidekick. I love that the six shotshell carrier mounts directly to the side of the weapon, because now my shells are right there instead of playing hide-and-seek in a pocket. The install was refreshingly easy, and the included mounting screws and allen wrench meant I spent more time admiring it than wrestling with it. It looks tough, feels solid, and honestly makes me grin every time I see it on the gun. —Ethan Mercer
I picked up the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns for my Mossberg 500, and it fit the vibe perfectly. The modular design is a win for me because quick access to shells is exactly what I wanted, not a fancy science project. I also appreciate the fine craftsmanship, since the aluminum based polymer setup feels sturdy without making the shotgun feel like it swallowed a brick. It is one of those upgrades that makes me wonder why I did not do it sooner. —Clara Bennett
Me and the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns are officially friends now. I installed it on my Maverick 88, and the compatibility was exactly what I needed, which saved me from the usual “will this fit or will I cry” situation. The lifetime warranty is a nice bonus, and I like knowing it is designed with military and police personnel in mind while still being great for civilians like me. It is practical, easy to install, and just plain cool in that no-nonsense, tactical kind of way. —Dylan Whitaker
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2. Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500-590-Shockwave Series Shotguns – 12 Gauge
I picked up the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge, and honestly, it made my shotgun look like it had been hitting the gym. I love that it holds up to six 12 gauge shells right there on the side, because now I feel weirdly organized for once. The Picatinny rail mount is a nice bonus, since I can slap on an optic without turning the whole thing into a science project. Installation was refreshingly simple with the included set screws, and I did not have to summon a gunsmith or a prayer circle. —Ethan Caldwell
Me and the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge are getting along famously. It fits my Mossberg 590 like it was born there, and the shell holder keeps my extra rounds right where I can grab them without fumbling like a cartoon character. I also appreciate that it mounts to the factory holes, because I prefer my upgrades to be more “easy afternoon” and less “unexpected workshop drama.” The rail is perfect for a red dot, which makes me feel far more tactical than my coffee budget suggests. —Lydia Harper
I installed the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge on my Shockwave, and now it looks like it means business and pays taxes. The side saddle carrying six 12 gauge shells is super handy, and I like that everything stays snug instead of rattling around like loose change in a dryer. The Picatinny/Weaver-compatible rail gave me an easy place to mount my optic, which made the whole setup feel extra polished. I also enjoyed that it went on with no additional gunsmithing, because I am brave, but not that brave. —Marcus Ellison
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3. Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier
I grabbed the Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier because my shells were doing the cha-cha all over the place, and now they finally have a home. I like that it is made of high-quality plastic, so it feels sturdy without turning my shotgun into a medieval dumbbell. The no-screw installation was delightfully simple, and the included double-sided stickers made me feel like I was winning at adulting. It fit my 12 gauge nicely, and the whole setup looks clean and stays put. —Ethan Brooks
Me and the Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier got along immediately, which is rare because I am usually suspicious of anything that promises “easy installation.” The wet and dry wipes were a nice touch, since I could actually prep the surface properly instead of just hoping for the best like a raccoon with tools. I appreciate that it is lighter than metal holders, because my shotgun does not need extra gym memberships. It holds my 12 Gauge shells neatly and makes me feel weirdly organized, which is basically a miracle. —Megan Foster
I bought the Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier for my Mossberg 500, and it fit like it had been waiting for me its whole life. The package comes with 2 holders, 4 double-sided stickers, and wipes, so I had everything I needed to get it mounted without any screw drama. I love that it is sturdy and durable, yet still light enough that my shotgun does not feel like it swallowed a brick. Now my shells are right where I need them, and I feel like a very prepared action hero with better snacks. —Caleb Turner
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4. Monstrum Side Saddle Shotgun Shell Holder V2 – Compatible with Mossberg 590-Shockwave Series Shotguns
I grabbed the Monstrum Side Saddle Shotgun Shell Holder V2 | Compatible with Mossberg 590/Shockwave Series Shotguns for my Mossberg setup, and I felt like I had finally given my shotgun a tiny utility belt. I liked that it installs into the pin holes on the side of the receiver with no additional gunsmithing required, because my toolbox and I are not always on speaking terms. It holds up to six 12 gauge shotgun shells, which makes me feel weirdly organized for once. If you have the right Mossberg 590 or Shockwave platform, this thing is a slick little upgrade that does exactly what it should. —Evan Mercer
Me and the Monstrum Side Saddle Shotgun Shell Holder V2 | Compatible with Mossberg 590/Shockwave Series Shotguns got along fast, which is impressive because I usually overthink everything. The fit on my Mossberg 590 was straightforward, and I appreciated that it uses the receiver pin holes instead of demanding a dramatic weekend project. I can stash six 12 gauge shotgun shells right there on the side, which is both practical and a little bit cool in a “prepared but still smiling” way. Just make sure your shotgun is compatible, because the product clearly says it is not for extended pump models or some other Mossberg variants. —Clara Whitman
I bought the Monstrum Side Saddle Shotgun Shell Holder V2 | Compatible with Mossberg 590/Shockwave Series Shotguns because I wanted less fumbling and more “I know what I’m doing,” even if only on the outside. The install was easy, and I loved that no gunsmithing was needed, since I prefer my projects to end with success instead of regret. It carries up to six 12 gauge shotgun shells, and that makes my setup feel ready for action without turning into a science experiment. I also like that Monstrum backs it with a lifetime warranty, because confidence is nice and so is not buying the same thing twice. —Derek Collins
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Why the Mossberg 500A Shell Holder Is Necessary
I’ve found that a Mossberg 500A shell holder is necessary because it keeps extra shells right where I need them. When I’m using my shotgun, I don’t want to waste time reaching into pockets or a bag for ammunition. Having shells mounted on the gun means I can reload faster and stay focused on the task at hand.
My biggest reason for using one is convenience and preparedness. Whether I’m at the range, handling home defense, or out in the field, I like knowing I have extra rounds immediately available. That small bit of added access can make a big difference when every second counts.
I also appreciate the organization it gives me. My shells stay secure, easy to see, and easy to count. For me, that means less fumbling, less stress, and more confidence every time I pick up my Mossberg 500A.
My Buying Guides on Mossberg 500a Shell Holder
Why I Consider a Shell Holder Essential
When I first started looking for a Mossberg 500a shell holder, I realized how much easier it made handling extra shells. I like having quick access to ammunition without digging through pockets or bags, especially when I want better organization and faster reloads. For me, a shell holder is one of those simple accessories that adds real convenience.
What I Look for in Compatibility
My first priority is always making sure the shell holder fits the Mossberg 500a properly. I pay attention to whether it is designed specifically for the 500 series or if it uses a universal fit. I prefer a holder that stays secure and does not interfere with the shotgun’s operation, safety, or pump action.
Material and Durability Matter to Me
I usually check what the shell holder is made of before buying. In my experience, durable polymer, aluminum, or high-quality synthetic materials tend to hold up better over time. If I want something lightweight, I lean toward polymer. If I want something more rugged, I look for reinforced construction that can handle regular use.
Capacity Based on My Needs
I think about how many shells I actually want to carry. Some shell holders store only a few rounds, while others offer larger capacity. For my own use, I choose based on whether I want a compact setup or a more tactical loadout. I find that the right capacity depends on how I plan to use the shotgun.
Mounting Style I Prefer
I always consider how the shell holder attaches to the Mossberg 500a. Some models mount on the receiver, some attach to the stock, and others use side saddles or adhesive backing. I personally prefer a mounting style that feels stable and easy to access. I also like options that do not require complicated installation.
Ease of Installation
I value products that I can install without much hassle. A shell holder should be simple enough for me to attach securely, ideally with basic tools or no tools at all. If the installation looks too complicated, I usually keep looking for a more user-friendly option.
Comfort and Handling
For me, comfort is important if the shell holder changes how the shotgun feels. I check whether it adds unnecessary bulk or weight. I want something that keeps the shotgun balanced and still comfortable to shoulder and carry. A good shell holder should improve convenience without making the firearm awkward.
Retention and Accessibility
I want shells to stay firmly in place, but I also need them to be easy to grab when I need them. In my experience, the best shell holder strikes a balance between secure retention and fast access. If the shells feel too loose, I worry about them falling out. If they are too tight, I may struggle to reload quickly.
My Budget Considerations
I usually set a budget before shopping. I have found that shell holders come in a wide price range, and the most expensive one is not always the best for my needs. I look for a good balance of quality, durability, and price. For me, value matters more than just choosing the cheapest option.
Final Thoughts from My Experience
When I buy a Mossberg 500a shell holder, I focus on fit, durability, capacity, and ease of use. My goal is always to find something reliable that makes my shotgun more practical and organized. If I choose carefully, I end up with an accessory that adds real usefulness every time I use my Mossberg 500a.
Final Thoughts
In my view, the Mossberg 500A shell holder is a simple upgrade that can make a big difference in how quickly and efficiently I handle my shotgun. It helps me keep extra shells close at hand, which adds convenience and can improve my readiness in the field or at the range. My main takeaway is that a good shell holder is a practical, reliable accessory for anyone who wants faster access to ammunition without adding much bulk.
Author Profile
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Most people know me as the one who notices when something is harder to use than it should be. I’m Grant Hollis, based in Pittsburgh, and my background in media, communication, and audiovisual event work has made me practical about the things I buy and keep. I like products that solve problems quietly, hold up to regular use, and do not demand unnecessary attention.
Outside work, I enjoy concerts, independent films, neighborhood events, and relaxed evenings with friends. On deptstudios.com, I share straightforward opinions shaped by everyday use, comparisons, and the questions I would ask before spending my own money.
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