Wolff Gunsprings - Colt 1911 Master Variable Power Recoil Calibration Pak 13117
Recoil Calibration Paks
Recoil calibration paks are offered to allow the shooter a choice of recoil springs to calibrate the recoil function when the correct spring rating is not known. These paks offer a savings of 20% over the same purchase of individual springs. The shooter starts with the strongest spring in the pak and works down until the desired recoil function is obtained.
For use in:
Colt 1911, 1911A1, 1991, Government, MKIV and Gold Cup models
Stock No. 13117 - Master Calibration Pak - Variable
This pak contains 1 each of 16.5 Lb. factory standard recoil spring, 9, 10, 11, 12, 13, 14, & 15 reduced power variable recoil springs, 17.5, 18.5, 20, & 22 Lb. extra power variable recoil springs and 5 each extra power firing pin springs.