Maximize your Sig Sauer P320's capacity with the Springer Precision +10 Magazine Extension, engineered specifically for 9mm and .40 S&W models. This precision-crafted base pad transforms standard 17-round magazines into high-capacity options, giving competitive shooters and tactical users a reliable edge without compromising reliability or handling. Key Features CNC-machined 6061 aluminum construction with durable hard anodizing for exceptional strength and corrosion resistance in demanding environments. Secure locking mechanism featuring a discrete set screw that delivers a rock-solid attachment while allowing quick, tool-assisted installation and removal. Low-profile, sleek design that maintains balance and works seamlessly with Springer Precision mag wells for enhanced grip and reload speed. Includes hex driver for effortless field adjustments and maintenance.