Warne SIG P320 Magazine Extension +5 9mm Black

The Warne SIG P320 Magazine Extension increases capacity and extends the grip for compatible Sig Sauer P320 9mm magazines. It is machined from 6061-T6 aluminum and finished with a hardcoat anodize for abrasion and corrosion resistance. The extension secures to the magazine body with a Torx head screw and washer and is designed to preserve magazine strip and seating functionality.

Key Specifications

• Fits Sig P320 magazines.
• Designed for 9mm magazines.
• Increases capacity by +5 rounds.
• Machined from 6061-T6 Aluminum billet.
• Finished with Type II hardcoat anodize (black).
• Retention hardware: Torx head screw and washer.
• Manufactured in the USA.
• Listed weight: 0.11 (manufacturer did not specify units).

This extension provides a discreet, durable option to increase magazine capacity and improve control for everyday carry, competition, or range sessions. Its billet construction and hardcoat anodize offer a low-profile, corrosion-resistant upgrade that maintains reliable magazine seating and strip capability while delivering additional capacity where allowed.