Springer Precision extended basepads for FN FNS 9/40 are CNC machined from aluminum and hard anodized. This lengthens the magazine .25" to make for easier, more reliable magazine changes. They also allow you to use a magwell without adding capacity to the magazines. They are perfect for IDPA ESP and USPSA.
Due to design variations, Springer Precision cannot guarantee compatibility with any other manufacturer’s after-market magwell, unless otherwise specified. Please call us with any questions.