Springer Precision 140mm Magazine Extension for Sig Sauer P320 9/40

Maximize your Sig Sauer P320's capacity and reload efficiency with the Springer Precision 140mm Magazine Extension for 9mm and .40 S&W models. Precision-engineered for competitive shooters and tactical users, this basepad extends your magazine to the USPSA 140mm gauge limit while delivering a secure, low-profile fit that enhances handling without adding bulk. Key Features CNC-machined from 6061-T6511 aluminum and hard anodized for exceptional durability and corrosion resistance in demanding environments. Unique discrete set-screw locking mechanism provides rock-solid attachment that remains stable during rapid fire and reloads, yet allows quick removal with the included hex driver. Optimized for USPSA 140mm compliance with full-size 17-round and compact 15-round P320 magazines, enabling up to 22-23 rounds in 9mm (depending on spring and follower configuration). Updated design requires no magazine tube modification and includes an upgraded, more durable screw for reliable long-term performance. Low-profile, sleek contour improves grip traction and magazine seating while maintaining compatibility with Springer Precision and OEM magwells. Specifications Weight: 1.41 oz Material: USA-sourced 6061-T6511 aluminum, hard anodized