Colt Government 1911 Variable Recoil Spring Calibration Pak, Extra Power $59.97 This pak contains 1 each of 17.5, 18.5, 20, & 22 Lb. extra power variable recoil springs. 3 extra power firing pin springs also included. 13116 Out of stock Categories: Colt 1911, Wolff Gun Springs Related products Fusion 1911 Commander Hammer, Stainless $75.00 Firing Pin Stop $25.00