TRINITY Aluminum Shell Holder and Picatinny Rail Mount Combo for Mossberg 500 590 12 Gauge 6 Round Carrier

Upgrade your setup with the TRINITY Aluminum Shell Holder and Picatinny Rail Mount Combo, designed for durability, versatility, and improved performance. Built for compatibility with Mossberg 500 and 590 platforms, this all-in-one kit provides both a secure optics mounting solution and convenient onboard shell storage.

The aluminum shell holder securely holds up to 6 rounds of 12 gauge ammunition, with a modular two-piece design that allows configuration for 4 or 6 shells. The dovetail slot system ensures a secure fit, while the black anodized finish adds durability and corrosion resistance.

The included Picatinny rail mount is precision-machined from aircraft-grade aluminum and installs directly onto factory pre-drilled receiver holes using included hardware. Its 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.

Engineered for strength and reliability, this TRINITY combo delivers a practical upgrade for hunting, range use, and tactical applications.

Key Features

• COMPLETE COMBO KIT – Includes aluminum shell holder and Picatinny rail mount for full functionality
• HOLDS 4 OR 6 SHELLS – Modular two-piece design allows flexible configuration
• COMPATIBLE WITH MOSSBERG 500/590 – 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 build
• SECURE INSTALLATION – Mount installs with included screws, no modifications required
• LOW PROFILE DESIGN – Adds functionality without unnecessary bulk