POLISH P64 RECOIL CALIBRATION PAK
Recoil Calibration Pak for the P64 contains 1 POLISH P64 9x18MAK STD RECOIL SPRING 18LB, 1 POLISH P64 9x18MAK XP RECOIL SPRING 20LB, and 1 POLISH P64 9x18MAK XP RECOIL SPRING 22LB.
This pack allows the shooter to adjust the recoil function to individual needs.