Description
Wolff FIRESTAR 9mm & .40, XP RECOIL CALIB PAK
Recoil Calibration Pak
Recoil Calibration Pak – Contains 1 each extra power recoil springs in 18, 20,22 and 24 pounds. Three extra power firing pin springs are also included.
For M43 (9mm) & M40 (.40 S&W) Only