Warne Magazine Extension for Sig Sauer P320 9mm Luger 5/rd

The Warne Magazine Extension for Sig Sauer P320 9mm Luger 5-round is a precision-engineered aluminum basepad designed to increase magazine capacity while maintaining reliability and ergonomics. Machined from 6061 T6 aluminum billet and finished with Type 2 hardcoat anodize, this extension adds five rounds to your existing P320 magazine without compromising durability or corrosion resistance in demanding conditions.

The extension features an ergonomic profile that facilitates smooth magazine insertion into the magwell while incorporating finger grooves for positive control during magazine extraction. The Type 2 hardcoat anodize finish provides protection against abrasion and corrosion, critical for operators working in saltwater environments, humid climates, or high-round-count training cycles. The aluminum construction keeps weight minimal—0.13 lbs—preserving the balance characteristics of your P320 duty or competition platform.

This extension suits P320 owners operating under magazine capacity limits who need marginally increased onboard ammunition without switching to alternate-capacity magazines. It's equally valuable for shooters seeking extended capacity during range training or tactical courses where additional rounds reduce magazine changes. Compatible with standard P320 magazines, the Warne extension integrates seamlessly into existing holster and mag carrier configurations.

Warne Manufacturing's focus on precision metalwork and protective finishes makes this extension suitable for users prioritizing corrosion resistance and sustained performance in variable field conditions. The machined aluminum construction ensures repeatable fit across production units, reducing compatibility variability common with lower-grade basepad extensions.