Warne Magazine Extension for SIG P320 – +3 Capacity, Black

This Warne magazine extension adds three rounds to factory SIG P320 magazines, increasing firepower without compromising reliability or concealability. Designed for shooters who need extra capacity for competition, range training, or duty use, this extension maintains a low profile while delivering measurable capacity gains.

Machined from durable aluminum with a black anodized finish, the extension installs directly onto compatible P320 magazines without permanent modification. Installation requires disassembly of the magazine baseplate and replacement with the Warne extension—straightforward for anyone comfortable with basic magazine maintenance. The extension includes a replacement spring to ensure reliable feeding at the increased capacity.

• Part Type: Magazine Extension
• Compatible Firearms: SIG Sauer P320
• Capacity Increase: +3 rounds
• Material: Aluminum
• Finish: Black Anodized
• Installation: Drop-In (magazine disassembly required)
• Includes: Extension body, replacement magazine spring