TacStar SideSaddle Mossberg 500/590 12 Gauge 4-Round Shell Holder - Black Polymer with Aluminum Mounting Plate

A TacStar SideSaddle shell holder for your Mossberg 500 or 590 puts extra firepower exactly where you need it—mounted securely to the side of your receiver without any gunsmithing or permanent modifications. This 4-round carrier is built from tough molded polymer and uses an aluminum mounting plate that locks into the existing pin and screw holes on your shotgun, making installation straightforward and removal just as easy if you want to swap setups.

Whether you're running a 500 for sport shooting, home defense, or hunting, having four rounds staged on the gun itself means faster follow-up shots and less fumbling with ammo while you're focused on your target. The lightweight design won't unbalance your shotgun, and the carrier's clean profile doesn't get in the way of your mount or sight picture.

TacStar's no-gunsmith approach has made the SideSaddle a standard choice for shooters who want extra capacity without sending their gun to a smith or drilling into the receiver. The aluminum plate is durable enough for hard use, and the polymer shell loops are engineered to keep rounds secure through recoil and movement. If you've got a Mossberg 500 or 590, this is the straightforward way to add practicality to your shotgun.

Key Features

• 4-round capacity molded-nylon shell carrier
• Aluminum mounting plate uses existing receiver pin/screw holes—no drilling or permanent alterations
• Fits Mossberg 500 and 590 shotguns
• Lightweight polymer construction
• Quick-access shells staged on the gun
• Installs and removes without gunsmithing

Specifications

Frequently Asked Questions

Will this shell holder work on my Mossberg 500 or 590?

Yes. The TacStar SideSaddle is designed to fit both the Mossberg 500 and 590 platforms. It mounts using the existing pin and screw holes on the receiver.

Do I need to modify or drill my shotgun to install it?

No. The mounting plate attaches directly to the existing pin/screw holes on your receiver. No gunsmithing, drilling, or permanent alterations are required.

How many rounds does it hold?

This model holds 4 rounds of 12-gauge ammunition in the molded polymer loops.

Can I remove it if I want to switch back to a stock shotgun?

Yes. Since it uses the existing holes and requires no permanent modifications, you can install and remove the SideSaddle without affecting your shotgun.