Warne Magazine Extension for Sig P320 — 9mm, +5 Capacity

The Warne magazine extension for the Sig P320 is a machined 6061-T6 aluminum accessory that increases 9mm magazine capacity by five rounds. It uses a Type 2 hardcoat anodized black finish for abrasion and corrosion resistance. The extension adds an ergonomic profile with finger grooves to assist magazine insertion and stripping. A Torx head screw and washer secure the extension to the magazine for reliable retention.

Key Specifications

• Designed for Sig P320 magazines.
• Compatible caliber: 9mm.
• Capacity increase: +5 rounds.
• Material: machined from 6061-T6 aluminum billet.
• Finish: Type 2 hardcoat anodized (black).
• Retention hardware: Torx head screw and washer.
• Includes ergonomic finger grooves for insertion and stripping.
• Manufacturing origin: designed and made in USA.

Built from billet aluminum and finished for durability, this extension provides a straightforward, low-profile way to increase magazine capacity and improve grip control. Its simple installation and secure retention make it a practical upgrade for range use and carry setups where added capacity and improved handling are desired.