Description
Running dry mid-hunt or mid-drill is a hassle nobody enjoys, and the TacStar SideSaddle fixes that by putting six extra 12-gauge rounds right where your support hand can grab them. It mounts flush against the receiver of your Mossberg 500 or 590, so a reload is a quick reach away instead of a fumble through a pocket or bag. This is the original patented design that plenty of Mossberg owners have leaned on for years, and it earns that reputation by being simple, sturdy, and dependable.
What Makes the TacStar SideSaddle Worth Bolting On
The build is straightforward and rugged. A corrosion-resistant polymer shell holder rides on an aluminum backing plate, so it holds up to rain, humidity, and the general beating that comes with real field use. The shell loops grip firmly enough that rounds stay put through recoil and rough handling, yet give up a shell smoothly when you need it. It carries six 12-gauge shells, and folks running mini shells can pack even more into the same loops.
Getting the SideSaddle Onto Your Mossberg 500 or 590
Installation is a no-gunsmith job in most cases. The kit ships with all the mounting screws, and the process uses the trigger pin holes on the receiver, so a punch and a little patience get you there in about fifteen minutes. One thing worth checking before you order: the mounting plate has two counter-bored holes, one set up for the 590DA and one for the 500 and standard 590, so you can match it to your gun.
A Note on Forend Clearance
Here's the real-world tip that saves headaches. If your shotgun wears a traditional field-grade forend that wraps back over the sides of the receiver, the six-shot saddle can bump it and keep the action from cycling fully. Guns running a tactical or pistol-grip style forend clear it without any fuss. A dab of Loctite on the screws is a smart move, and a light touch of oil on tight new loops loosens them up nicely.
Key Specifications
- Manufacturer: TacStar
- Manufacturer Part Number: 1081159
- UPC: 751103011591
- Model: SideSaddle
- Model Fit: Mossberg 500/590
- Product Type: Shotshell Carrier
- Gauge: 12 Gauge
- Capacity: 6 Rounds
- Mount Type: Receiver
- Shell Holder Material: Corrosion-Resistant Polymer
- Backing Plate Material: Aluminum
- Color: Black
- Length: 7.75 in
- Style: Range Loader
What’s Included
- TacStar SideSaddle 6-shot shell carrier with aluminum backing plate
- Mounting screws and hardware
- Installation instructions
Frequently Asked Questions
Will the TacStar SideSaddle fit my Mossberg 500 without modifications?
In most cases yes, especially if your shotgun runs a tactical or pistol-grip style forend, which clears the six-shot saddle without any trouble. The catch is field-grade forends that extend back over the sides of the receiver, since those can contact the saddle and keep the action from cycling fully. If that's your setup, you'd need to shorten the forend or swap to a TacStar or Pachmayr forend.
Does installing the SideSaddle require a gunsmith?
No, it's a do-it-yourself job for most owners. All the mounting screws come in the box and the plate uses the receiver's trigger pin holes, so a punch and about fifteen minutes gets it done. Go easy tightening the main screw, since overtightening can bind up the action, and a drop of Loctite helps keep everything locked in place.
How many shells does it hold and how tightly does it grip them?
It carries six 12-gauge shells, and if you run mini shells you can fit even more in the same loops. The retention is firm enough to hold shells through recoil without dropping them, while still letting you pull one free when needed. New loops sometimes feel stiff at first, and a light bit of oil loosens them right up.
Is the SideSaddle built to hold up outdoors?
It is. The shell holder is made from a corrosion-resistant polymer and it rides on an aluminum backing plate, so rain, humidity, and general field abuse aren't a problem. That combination is a big part of why this design has stuck around and stayed popular with Mossberg owners.





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