Springer Precision EZ CZ Tactical Sport 9mm or .40 S&W base pad Orange SP0311-OR.
These won't work on the CZ Tactical Sport .40 S&W 10 round magazines that have the polymer base plate that extends up the magazine tube.
EZ CZ base pads are CNC machined from aluminum and hard anodized. They extend the CZ Tactical Sport magazine making for easier and more reliable magazine changes. The Springer Precision base doesn’t add any capacity to the magazine. Perfect for IPSC and USPSA.