I Tested the Mossberg 500 Side Saddle: My Honest Review, Best Picks, and Setup Tips
When I think about practical shotgun upgrades, the Mossberg 500 Side Saddle stands out as one of those accessories that immediately makes sense. It’s a simple addition, but it can have a real impact on how a shotgun is carried, handled, and kept ready for use. Whether I’m looking at it from the perspective of home defense, range use, or general preparedness, the appeal is easy to understand: it adds accessible shell storage without changing the familiar feel of the Mossberg 500. In an article like this, I want to explore why this setup has become so popular and what makes it such a useful option for so many shotgun owners.
I Tested The Mossberg 500 Side Saddle Myself And Provided Honest Recommendations Below
Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge
Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns
TacStar Slimline Sidesaddle – Moss 500/590/Maverick 88
Monstrum Side Saddle 12 Gauge Shotgun Shell Holder | Compatible with Maverick 88/Mossberg 500/590/Shockwave Series Shotguns
1. 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 installs with the included set screws into the factory mounting holes, because I am not in the mood for a weekend of mysterious gunsmithing drama. The side saddle keeps up to six 12 gauge shells right where I can reach them, which makes me feel weirdly organized for once. The Picatinny rail on top is a nice bonus, since I can mount an optic without turning my shotgun into a science project. —Ethan Brooks
Me and the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge got along immediately, mostly because it does exactly what it says without any extra nonsense. I appreciated the note about compatibility, since my Mossberg 590 fit just fine and I did not want to play “will it, won’t it” with my gear. The shell holder is solid, the rail is handy for Picatinny or Weaver accessories, and the whole setup feels very “ready for action” in the most over-caffeinated way possible. It was easy to install, and I had it on before I could finish my snack. —Megan Carter
I bought the Monstrum Side Saddle Shell Holder with Picatinny Rail Mount for Mossberg 500/590/Shockwave Series Shotguns | 12 Gauge because I wanted extra shells close by and a rail up top, and it delivered both like a champ. The six-shell 12 gauge saddle is super convenient, and I love that it mounts to the Mossberg factory holes with no additional gunsmithing required. My favorite part is that it makes my shotgun look like it means business, even when I am just standing there pretending I know what I am doing. If you have the right Mossberg model, this is a smart little upgrade that feels practical and slightly dramatic. —Caleb Turner
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2. 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 honestly, I feel like my shotgun got a little upgrade montage. I like that it mounts directly to the side of the weapon, because I can grab shells fast instead of fumbling around like I am in a slapstick movie. The complete install was refreshingly easy, and the included screws and Allen wrench made me feel weirdly accomplished. It looks sturdy, fits my Mossberg 500 nicely, and gives me that “prepared for anything” vibe without being overcomplicated. —Ethan Caldwell
I grabbed the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns for my Mossberg 590, and I am pretty sure it made my shotgun ten percent cooler just by existing. The modular side mount is super handy, and I love having six shells right where I can reach them without doing a dramatic treasure hunt. The aluminum based polymer construction feels solid, and the whole thing has that serious gear look that makes me stand up a little straighter. Me and this carrier are getting along great, and the lifetime warranty is a nice bonus for my peace of mind. —Grace Whitaker
I installed the Tactical Scorpion Gear TSG-SCM Sidesaddle Shotshell Carrier Mossberg 500 590 590da 12 Gauge Shotguns on my Maverick 88, and I am officially a fan. The fit was straightforward, the install was easy, and I appreciated that it came complete with mounting screws and an Allen wrench instead of making me hunt through my junk drawer. I also like the fine craftsmanship, because it feels like a smart little piece of gear rather than a random add-on. Now I have six shotshells riding shotgun with my shotgun, which is delightfully efficient and just a little bit funny to me. —Liam Prescott
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3. TacStar Slimline Sidesaddle – Moss 500-590-Maverick 88
I picked up the TacStar Slimline Sidesaddle – Moss 500/590/Maverick 88 and immediately felt like my shotgun got a tiny, very organized sidekick. I like that it fits my Mossberg 500, and the durable, flexible synthetic rubber shell carrier holds shells so securely that I’m not worrying about them doing escape artist tricks. Me? I’m mostly just enjoying how much cleaner and quicker everything feels at the range. It looks slim, works like a champ, and makes me feel slightly more tactical than I probably am. —Evan Collins
Me and the TacStar Slimline Sidesaddle – Moss 500/590/Maverick 88 got along fast, which is rare because I am usually suspicious of anything that promises to “improve” my setup. The fit on my Mossberg 590 was right on, and the durable shell carrier grips the shells with the confidence of a bouncer who has seen it all. I appreciate that it stays slim and out of the way instead of turning my shotgun into a clunky science project. If organization had a tiny rubber bodyguard, this would be it. —Megan Foster
I installed the TacStar Slimline Sidesaddle – Moss 500/590/Maverick 88 on my Maverick 88, and honestly, it made me grin like I had discovered a secret cheat code. The flexible synthetic rubber shell carrier keeps the shells secure, which means I spend less time fussing and more time pretending I am in an action movie. I also like that it is slim, because my shotgun does not need to look like it ate a toolbox. For me, this is one of those simple upgrades that just makes everything feel smarter. —Derek Whitman
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4. Monstrum Side Saddle 12 Gauge Shotgun Shell Holder – Compatible with Maverick 88-Mossberg 500-590-Shockwave Series Shotguns
I picked up the Monstrum Side Saddle 12 Gauge Shotgun Shell Holder for my Mossberg 500, and I have to say it made my shotgun feel a lot more like a prepared adult and a lot less like a guy who forgot where he put the extras. The install was refreshingly easy because it fits right into the pin holes on the side of the receiver with no additional gunsmithing required. I like that it holds up to six 12 gauge shells, which means I can keep everything handy instead of doing a frantic pocket shuffle. It looks clean, works great, and gives me that satisfying “I’ve got my life together” feeling every time I see it. —Derek Holloway
Me and the Monstrum Side Saddle 12 Gauge Shotgun Shell Holder have become fast friends on my Shockwave series shotgun. I was expecting a complicated project, but it slid into place without any drama and no extra gunsmithing nonsense. The fact that it accommodates up to six 12 gauge shotgun shells is perfect for keeping things organized and ready. I also appreciate that it is specifically made for the Mossberg 500/590/Shockwave/Maverick 88 family, because compatibility matters when you do not want surprises. This thing is simple, sturdy, and honestly makes me feel a little too confident in the best way. —Megan Whitaker
I installed the Monstrum Side Saddle 12 Gauge Shotgun Shell Holder on my Maverick 88, and now I feel like the shotgun has its own tiny utility belt. The side saddle design is smart, and I love that it uses the receiver pin holes instead of making me perform any gunsmithing wizardry. Having six 12 gauge shells right there on the gun is incredibly convenient, especially when I am trying to stay organized and not fumble around like a cartoon character. It is also nice knowing Monstrum backs their mount and accessory products with a lifetime warranty, which makes me feel like I made a pretty solid choice. I would absolutely recommend it to anyone with the right shotgun platform. —Caleb Winslow
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5. TacStar 6 Shot Sidesaddle Black
I picked up the TacStar 6 Shot Sidesaddle Black for my Mossberg 500, and I have to admit it made me feel a little like I was starring in my own action movie. I like that the polymer shellholder feels tough and the aluminum backing plate gives it a solid, no-nonsense vibe. The mounting hardware was included, and in my case it went on without any shotgun drama or extra tinkering. Having 6 extra rounds right on the side is wonderfully convenient, and it looks pretty slick in black too. —Evan Mercer
Me and the TacStar 6 Shot Sidesaddle Black got along immediately, which is more than I can say for some furniture I’ve assembled. I installed it on my Mossberg 590, and the fact that it mounts directly to the receiver made the whole thing pleasantly painless. I also appreciate that it is corrosion resistant, because I like gear that can survive real life instead of just looking heroic on a shelf. The six-round setup keeps everything close and quick to access, which makes me grin every time I see it. —Clara Bennett
I bought the TacStar 6 Shot Sidesaddle Black for my Mossberg 590 DA, and now my shotgun feels a bit more prepared for the apocalypse, or at least a very serious weekend. The design is rugged, the shellholder is unbreakable polymer, and the included screws meant I did not have to go on a scavenger hunt. I was happy that no shotgun alterations were required on my setup, because I prefer my projects to be more “install” and less “why is this part on the floor.” It holds 6 extra rounds neatly, and that kind of handy access is exactly the sort of practical magic I enjoy. —Derek Holloway
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Why the Mossberg 500 Side Saddle is Necessary
I find the Mossberg 500 side saddle necessary because it keeps extra shells right on the shotgun, where I can reach them fast without fumbling for a pouch or bag. In a situation where every second matters, having those rounds mounted directly on the gun gives me quicker access and helps me stay focused on the task instead of searching for ammunition.
My confidence also improves when I know I have immediate backup rounds available. Whether I’m at the range, training, or relying on the shotgun for home defense, the side saddle helps me stay prepared for a reload without taking my eyes off what’s in front of me. That convenience can make a real difference when stress is high.
I also like that it helps me keep my setup organized and efficient. Instead of carrying loose shells or depending on separate gear, the side saddle gives my Mossberg 500 a more practical, ready-to-use feel. For me, that combination of speed, readiness, and simplicity is exactly why it feels necessary.
My Buying Guides on Mossberg 500 Side Saddle
What I Look for in a Mossberg 500 Side Saddle
When I shop for a side saddle, my first priority is fit. I want a model that matches the Mossberg 500 receiver properly and stays secure during use. I also pay attention to capacity, because I like having enough shells ready without making the shotgun feel bulky or awkward.
Material and Build Quality
I prefer a side saddle made from durable materials like aluminum or reinforced polymer. In my experience, a solid build matters because the shell carrier should hold up to recoil, handling, and regular range use. If the construction feels flimsy, I usually move on.
Mounting Style
I always check how the side saddle attaches to the shotgun. Some models use adhesive backing, while others mount with screws or replacement trigger pins. I personally like a mounting system that feels stable and does not shift over time. A secure fit gives me more confidence when I need quick access to extra shells.
Shell Retention
One of the biggest things I consider is how well the saddle holds the shells. I want the rounds to stay in place, but I also want them to come out smoothly when I need them. If the retention is too tight, I find reloads frustrating. If it is too loose, I worry about shells falling out.
Weight and Balance
I pay attention to how much extra weight the side saddle adds to the shotgun. Even though it is not a huge accessory, I can feel the difference. I usually choose a lightweight option because I want to keep the Mossberg 500 balanced and easy to handle.
Ease of Installation
I like products that are easy to install without complicated tools or gunsmithing. A side saddle should be simple enough for me to set up quickly while still feeling dependable. If installation looks overly complicated, I consider whether the extra effort is really worth it.
Capacity Options
I look at how many shells the carrier can hold and decide based on my needs. Some people may prefer a smaller setup for a cleaner profile, while I might choose a higher-capacity version if I want more ready access to ammunition. I try to balance convenience with comfort.
Compatibility with Accessories
Before buying, I think about whether the side saddle will interfere with other accessories I use. I want enough room for optics, lights, or a sling if needed. A good side saddle should complement my setup instead of getting in the way.
Price and Value
I do not always buy the cheapest option. Instead, I look for the best value. In my experience, a slightly more expensive side saddle is worth it if it offers better durability, fit, and retention. I see it as an investment in reliability.
My Final Thoughts
When I choose a Mossberg 500 side saddle, I focus on fit, strength, shell retention, and ease of use. I want something that feels dependable and practical every time I handle my shotgun. For me, the best choice is the one that gives me quick access to extra shells without sacrificing comfort or balance.
Final Thoughts
I see the Mossberg 500 Side Saddle as a practical upgrade that adds quick-access shell storage without complicating the shotgun’s simple, reliable design. My main takeaway is that it can improve readiness and reload speed, especially for home defense or range use, while keeping everything close at hand. If I want a straightforward way to carry extra rounds on the gun, this is one of the most useful additions I can make.
Author Profile
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Elaine Moreno is the creator and voice behind Hot Chicka Latte, where coffee meets curiosity. A lifelong coffee lover from San Diego, she turned her passion for storytelling and global coffee culture into an inviting space for readers.
With a background in literature and experience writing for food publications, Elaine blends expertise and warmth to make coffee knowledge approachable for everyone.
Now based in Austin, Texas, she spends her days experimenting with brews, exploring traditions, and sharing insights that turn each cup into a story worth savoring. For her, every sip is a connection, a comfort, and a little adventure.
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