FITS: Mossberg 12GA 500/590/Maverick 88.
The Adaptive Tactical AT-06000-M is a popular side-saddle shell carrier designed specifically for the Mossberg 500 series. It is a lightweight, non-permanent upgrade that allows you to keep extra ammunition directly on the receiver for faster reloads.
Key Specifications
| Feature | Details |
| Compatibility | Mossberg 500, 590, and Maverick 88 |
| Capacity | 6 Rounds |
| Gauge | 12 Gauge only |
| Material | Durable synthetic rubber on a shaped mounting plate |
| Installation | Non-permanent; uses existing receiver pin holes |
Performance Features
- Rapid Access: The "side-saddle" design keeps shells close to the ejection port, facilitating "emergency" reloads or topping off the magazine tube without taking your eyes off the target.
- Flexible Retention: Unlike rigid plastic carriers that can lose their grip over time, the synthetic rubber loops flex to hold shells securely but release them smoothly without snagging.
- Low Profile: The mounting plate is contoured to the Mossberg receiver, ensuring it doesn't add unnecessary bulk or snag on clothing/gear.
- Weather Resistant: The materials are chemical and weather-resistant, meaning they won't degrade if exposed to rain or cleaning solvents.
⚠️ Important Compatibility Note: "The Forend Advisory"
The most critical thing to check before buying is your forend length.
- Standard/Tactical Forends: Short forends typically work perfectly.
- Field Grade/Longer Forends: If your shotgun has a "corncob" or field-style forend that overlaps the receiver when pulled back (cycled), it will hit the shell carrier.
- The Fix: You would need to either swap to a shorter tactical forend (like the Adaptive Tactical EX Performance) or physically trim the back of your existing forend to allow it to clear the carrier.
Installation Tip
Installation is straightforward: you replace the existing trigger housing pin with the provided threaded bolt. It is highly recommended to use a small drop of blue Loctite (removable thread locker) on the mounting screws to prevent them from backing out due to the shotgun's recoil.
