Recoil Calibration Packs are offered to allow the shooter a choice of recoil springs to calibrate the recoil function when the correct spring rating is not known. The shooter starts with the strongest spring and works down until the desired recoil function is obtained. Each Pak contains several recoil springs and offers a savings over buying them individually. Three extra power firing pin/striker springs are also included.
Contains one each of 5 lb, 6 lb, 7 lb, 8 lb, 9 lb variable recoil springs and three extra power firing pin springs.
Features: Provides a choice of recoil springs to calibrate the recoil function when the correct spring rate is not known.
Gunsmithing Required: No
Factory 1911 recoil springs are 16 pounds in 45 ACP, 14 pounds in 38 Super, 9mm Luger, 38 Special Midrange, Colt Ace 22 conversion kit, and 19 pounds in 40 S&W.
The Delta Elite 10mm uses a dual factory spring rated at 23 pounds. Single recoil springs require that the Delta Elite recoil spring guide be replaced with a standard 45 ACP recoil spring guide.