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

Maximize your Sig Sauer P320's performance with the Springer Precision 140mm Magazine Extension for 9/40 models. Designed for competitive shooters and tactical enthusiasts, this precision-engineered basepad extends your magazine to the USPSA 140mm limit while delivering reliable capacity increases and a secure fit. Key Features CNC-machined from 6061-T6511 aluminum and hard anodized for exceptional durability and corrosion resistance in demanding environments. Unique set-screw locking mechanism ensures a rock-solid attachment with simple installation-no magazine tube modifications required on the latest version. Low-profile, sleek design provides enhanced stability and easy removal, compatible with Springer Precision magwells and select OEM options. Includes 1/16" hex driver for quick, tool-assisted install and removal. Fits USPSA 140mm magazine gauge when paired with compatible full-size or compact P320 magazines. Capacity and Compatibility This extension adds valuable rounds without compromising reliability. Pair it with an extra-power spring for up to 22-23 rounds in 9mm using a 17-round magazine or 21 rounds with a 15-round compact mag. It works with 17rd, 15rd, 21rd, and even 30rd P320 magazines, though it is not recommended for Magpul AMAGs or certain subcompact models with folding flanges.