Agency Arms Magazine Extension for P320 – +5 Rounds, Sage Dynamics ODG

The Agency Arms +5 Magazine Extension increases the capacity of factory SIG Sauer P320 magazines by five rounds, offering extended firepower for competition, duty, or personal defense without requiring a larger magazine body. Developed in collaboration with Sage Dynamics, this extension maintains reliable feeding while adding substantial capacity to your carry or full-size P320.

Machined from billet aluminum with an OD Green anodized finish, the extension installs with factory magazine springs and followers—no proprietary components required. Installation is straightforward for users familiar with magazine disassembly, though proper spring tensioning is critical for reliable function. The ODG finish coordinates with many popular frame colors and Cerakote finishes.

• Part Type: Magazine Extension
• Compatible Firearms: SIG Sauer P320 (Compact, Carry, Full-Size)
• Capacity Increase: +5 Rounds
• Material: Billet Aluminum
• Finish: OD Green Anodized
• Installation: User-Installable (requires magazine disassembly)
• Compatibility: Works with factory magazine springs and followers