TRINITY Aluminum Shell Holder and Picatinny Rail Mount Combo for Mossberg 590 12 Gauge 6 Round Carrier

Upgrade your Mossberg 590 with the TRINITY Aluminum Shell Holder and Picatinny Rail Mount Combo, engineered for durability, versatility, and improved performance. This all-in-one kit provides both a secure optics mounting platform and convenient onboard shell storage, making it ideal for hunting, range use, and tactical applications.

The aluminum shell holder securely holds up to 6 rounds of 12 gauge ammunition and features a modular two-piece design with a dovetail slot, allowing configuration for 4 or 6 shells. Its lightweight yet durable construction ensures reliable retention even under recoil.

The included Picatinny rail mount is precision-machined from aircraft-grade aluminum and installs directly onto factory pre-drilled receiver holes using the included hardware. The low-profile design includes a see-through channel, allowing continued use of the front bead sight while mounting optics such as scopes, red dots, or lasers.

Finished in a black anodized coating for corrosion resistance and durability, this TRINITY combo delivers a reliable and easy-to-install upgrade for enhanced functionality and performance.

Key Features

• COMPLETE COMBO KIT – Includes aluminum shell holder and Picatinny rail mount for full upgrade
• HOLDS 4 OR 6 SHELLS – Modular two-piece design allows flexible configuration
• COMPATIBLE WITH MOSSBERG 590 – Designed to fit models with factory drilled receiver holes
• PICATINNY/WEAVER READY – Supports scopes, red dots, lasers, and other accessories
• SEE-THROUGH RAIL DESIGN – Maintains use of front bead sight while optic is mounted
• DURABLE ALUMINUM CONSTRUCTION – Lightweight, strong, and corrosion-resistant
• SECURE INSTALLATION – Mount installs using included screws with no modifications required
• LOW PROFILE DESIGN – Enhances functionality without adding unnecessary bulk