USPSA Magazine Extension Kit - SIG SAUER P320

Our extended base pads are legal for USPSA Limited and Open competitions. Attached to the factory magazines they extend the magazine to 141.25mm length (5.56"). Whether you want to be competitive or not, these pads will extend the capacity of your Sig Sauer P320 magazines. These base pads are best matched with Grams Follower and Spring Kit which additionally increases the capacity. In fact, we only run our magazines in a combination with our base pads and Grams spring kits.



For 9 mm you will increase from 17 rounds to 23 rounds (extension and Grams Kit)

For 40 S&W you will increase from 14 rounds to 20 rounds (extension and Grams Kit)