Warne Mag Ext Sigp320 +3 De

The Warne Mag Ext Sigp320 +3 De is a premium magazine extension designed specifically for the SIG Sauer P320 platform, adding three rounds of capacity while maintaining reliable feeding and consistent performance. Machined from 6061 T6 aluminum billet and finished with Type 2 hardcoat anodize, this extension provides the durability and corrosion resistance operators demand in high-round-count training and duty environments.

The extension features an ergonomic profile with integral finger grooves that simplify magazine manipulation during tactical reloads and emergency strip operations. The hardcoat anodize finish resists both abrasion and environmental corrosion, critical for weapons carried in varied climates or salt-air environments. At 0.13 lbs, the extension adds negligible weight to the magazine, preserving the P320's handling characteristics and holster compatibility across most platforms. The compact 3 × 1 × 7.5-inch footprint ensures the extended magazine remains practical for concealed carry and duty rigs without excessive protrusion or printing issues.

This extension suits armed professionals, competitive shooters, and serious enthusiasts running the P320 as a primary duty or training platform. Those operating in high-round-count scenarios—patrol duty, advanced force-on-force training, or multi-stage competitions—benefit from the additional reserve capacity without sacrificing draw speed or holster retention. The P320's modular design ecosystem means this extension integrates seamlessly across compact, carry, and full-size slide groups, making it a practical upgrade for operators with multiple P320 configurations.

Warne Scope Mounts has built its reputation on precision-engineered tactical accessories, and this P320 extension reflects that standard. Magazine extensions represent a critical interface between shooter and platform—poor design compromises reload speed, feeding reliability, and ergonomics. Warne's aluminum construction and thoughtful grip geometry address all three, making this extension a reliable choice for operators who depend on their gear.