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.
Features: Spring pak allows custom tuning of pistol
Gunsmithing Required: Replace original spring
Contains 1 factory weight 15 lb spring, and 1 each 16 and 18 lb recoil springs
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