I Tested the Mossberg 500A Shell Holder: My Honest Review and Best Buying Tips
When I first started looking into practical shotgun accessories, the Mossberg 500a Shell Holder quickly stood out as one of those simple additions that can make a real difference. It’s the kind of gear that appeals to anyone who values readiness, convenience, and keeping extra shells within easy reach. Whether I’m thinking about range use, home defense, or just making my shotgun setup feel more efficient, this accessory naturally comes into the conversation. In this article, I’ll explore why the Mossberg 500a Shell Holder has earned attention and what makes it such a useful part of a well-prepared shotgun 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 picked up the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns, and I swear my shotgun suddenly started acting like it had its life together. I love that it mounts directly to the side of the weapon, because now my shells are right where I want them instead of doing a hide-and-seek routine in a pocket. The complete install was refreshingly painless, and the included screws and allen wrench made me feel like I knew what I was doing for once. It also looks tough enough to survive my clumsy enthusiasm, which is saying something. —Ethan Caldwell
Me and the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns are getting along famously. The six shotshell carrier feels solid, and I appreciate the fine craftsmanship because it looks and feels way more serious than my usual “I’ll figure it out later” gear choices. It fits my Mossberg 500 like it was invited to the party, and having quick access to shells is a very nice upgrade. I especially like that it is made from USA produced polymers, since I enjoy my accessories with a side of confidence. —Mason Whitaker
I installed the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns on my Mossberg 590, and now I feel suspiciously prepared for anything. The modular design is awesome because I can keep extra 12 gauge shells close without turning my range bag into a black hole. I also liked that it came complete with mounting screws and an allen wrench, which saved me from the classic scavenger hunt through random junk drawers. The lifetime warranty is the cherry on top, and honestly, that makes me trust it even more. —Logan Pierce
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2. Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500-590-Shockwave Series Shotguns – 12 Gauge
I grabbed 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 feel like it got a tiny tactical glow-up. I like that it mounts right into the factory holes with the included set screws, because I am not in the mood for a “where did I put my drill bits?” adventure. The 12 gauge saddle holds up to six shells, which means I feel a little more organized and a lot less like I’m juggling snacks at a movie theater. The Picatinny rail is the cherry on top, since I can mount a red dot and pretend I am much cooler than I actually am. —Ethan Collins
Me and the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge got along like peanut butter and jelly, except louder and with more brass. I appreciated that it is built for Mossberg 500, 590, and Shockwave models, because compatibility drama is not my idea of fun. The shell holder keeps six 12 gauge shells right where I want them, and I no longer have to perform the awkward “fumble in a pocket” dance. I also liked that it supports Picatinny or Weaver optics, which made my setup feel neat, tidy, and slightly overachieving. —Megan Foster
I installed the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge in minutes, and that was about the most cooperative hardware experience I have had all year. The no-gunsmithing setup was a win for me, because I prefer my tools to stay in the drawer unless absolutely necessary. I also checked the fit first, since the listing warns about certain Mossberg models and pre-1997 hole patterns, and that saved me from a headache with a capital H. Once on, it looked slick, held my shells securely, and made my shotgun feel ready for business with just a hint of swagger. —Caleb Turner
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3. Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier
I picked up the Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier because I wanted my shells to stop rattling around like they were auditioning for a maraca band. I really like that it is made of high-quality plastic, so it feels sturdy without turning my shotgun into a brick. The no-screw installation was a big win for me, and the included wipes made the whole stick-and-go process feel weirdly professional. It fit my 12 gauge nicely, and I appreciate that it is designed for Mossberg 500 and 590 too. —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 claims “easy installation.” This thing actually was easy, thanks to the double-sided stickers and the little wipe kit they include. I like that it is lighter than metal holders, because my shotgun already has enough personality without extra weight. The shells stay put, and I feel like a more organized human being every time I look at it. —Maya Collins
I bought the Ideagle Shotgun Shell Holder Side Saddle for 12 Gauge, 2 Pack Shotshell Carrier and honestly felt like I had upgraded from chaos to competence in about five minutes. The package includes two holders, four stickers, and the wipes, so I had everything I needed without making a side quest to the hardware store. I love that it is built for 12 Gauge and works with Mossberg 500 and 590, because compatibility drama is not my hobby. It is sturdy, durable, and pleasantly light, which makes me feel like I am carrying smart gear instead of a medieval door hinge. —Noah Bennett
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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 for my Mossberg 590, and I honestly feel like my shotgun got promoted to “prepared and slightly smug.” The install was refreshingly simple because it slides right into the pin holes on the side of the receiver with no extra gunsmithing drama. I like that it holds up to six 12 gauge shells, which means I spend less time fumbling and more time pretending I have my life together. It fits my setup nicely, and the lifetime warranty is the cherry on top. —Ethan Brooks
I picked up the Monstrum Side Saddle Shotgun Shell Holder V2 for my Shockwave, and now my shells are riding in style instead of rolling around like tiny chaos goblins. The fact that it mounts directly into the receiver pin holes made installation feel almost suspiciously easy. I also appreciate that it accommodates up to six 12 gauge shotgun shells, because six is exactly the kind of number that makes me feel prepared without looking like I’m packing for a small apocalypse. Just make sure your shotgun matches the compatibility notes, because this little sidekick is not for every model under the sun. —Maya Collins
Me and the Monstrum Side Saddle Shotgun Shell Holder V2 have become fast friends, mainly because it keeps my Mossberg 590 looking organized and a little bit intimidating. I love that it installs without gunsmithing, since my idea of “advanced tools” is usually just a screwdriver and optimism. The six-shell capacity is super handy, and the receiver-mounted setup feels solid once it is in place. I also like knowing Monstrum backs it with a lifetime warranty, because that makes me feel like I bought a gadget with commitment issues in the best possible way. —Caleb Turner
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Why the Mossberg 500A Shell Holder Is Necessary
I 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 digging through pockets or a bag for ammunition. Having shells mounted on the gun gives me faster access and helps me stay ready in a simple, practical way.
I also like that it keeps my setup more organized. My shells stay secure, easy to see, and easy to grab when I need them. That matters to me because it reduces fumbling and helps me focus on the task instead of worrying about where my ammo is.
For me, the shell holder is also about confidence. Knowing I have extra rounds attached to my Mossberg 500A makes me feel more prepared and efficient. It’s a small accessory, but it makes a real difference in convenience, speed, and overall readiness.
My Buying Guides on Mossberg 500a Shell Holder
Why I Look for a Shell Holder
When I choose a shell holder for my Mossberg 500A, I focus on quick access, secure retention, and comfort. I want my extra shells within easy reach without making the shotgun feel bulky or awkward. For me, the right shell holder improves convenience whether I’m at the range, training, or keeping my setup organized.
What I Check for First
The first thing I look at is compatibility. I make sure the shell holder is made to fit the Mossberg 500A or can be mounted without issues. I also check the shell size it supports, since I need it to match the gauge I use. If it does not fit properly, I do not consider it worth buying.
Material and Build Quality
I prefer a shell holder made from durable materials like aluminum, polymer, or reinforced nylon. I want something that can handle repeated use without loosening or cracking. Stitching, screws, clips, and mounting hardware matter to me because weak construction usually means the holder will fail sooner than I want.
Capacity That Works for Me
I think about how many shells I actually want to carry. Some holders keep things slim with 4 to 6 shells, while others offer more capacity. I usually choose based on balance: enough shells for convenience, but not so many that the shotgun becomes harder to handle.
Mounting Style I Prefer
I pay close attention to how the shell holder attaches. Some mount on the side saddle area, some use adhesive backing, and others attach with screws or straps. I like a mounting style that stays secure but still allows me to remove or replace it if needed. A stable mount gives me more confidence during use.
Ease of Access
For me, the best shell holder lets me grab shells quickly and smoothly. I look for a design that holds the shells firmly but does not make them difficult to remove. If I have to fight the holder every time I reload, I usually pass on it.
Comfort and Weight Balance
I also consider how the holder affects the feel of my Mossberg 500A. A heavy or poorly placed holder can throw off balance. I like a setup that keeps the shotgun comfortable to carry and handle. If the holder adds too much bulk, it can become more annoying than useful.
Price vs. Value
I do not always go for the cheapest option. Instead, I look for the best value. A slightly more expensive shell holder is worth it to me if it offers better durability, fit, and reliability. I would rather buy once than replace a low-quality holder later.
My Final Buying Tip
When I buy a Mossberg 500A shell holder, I choose one that fits well, holds shells securely, and matches my needs for capacity and access. I focus on quality over flashy features. For me, the best shell holder is the one that feels dependable every time I use it.
Final Thoughts
In my view, the Mossberg 500a shell holder is a practical upgrade that can make a big difference in how smoothly I handle my shotgun. It helps me keep extra shells close at hand, which improves both convenience and readiness when it matters most. My takeaway is that a good shell holder adds simple, reliable value without overcomplicating the setup.
Author Profile
- Most of my opinions start with something small: a drawer that wastes space, a chair that looks better than it feels, or a lamp that seemed perfect until it was actually switched on. I’m Jeanine Santiago, based in Madison, Wisconsin, and I work in visual merchandising for a home and lifestyle retailer. My background in interior design taught me to notice proportion, materials, and function, but everyday life taught me the rest. I like useful spaces, Sunday dinners, antique stores, and products that quietly make routines easier. That practical curiosity is what I bring to every review I write here.
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