Performance Pak -
Glock 17, 20, 21, 22, 24, 31, 34 & 35 - Pak contains 1 each 14 Lb. reduced power recoil spring, 20 Lb. extra power recoil spring, a 5.5 Lb. factory strength striker spring and a 4 Lb. reduced power striker spring. Not for use in Generation 4.
Glock 19, 23, 32 - Pak contains 1 each 18 Lb. factory recoil spring, 22 Lb. extra power recoil spring, a 5.5 Lb. factory strength striker spring and a 4 Lb. reduced power striker spring. Not for use in Generation 4.
Glock 17, 20, 21, 22, 24, 31, 34 & 35 - Pak contains 1 each 14 Lb. reduced power recoil spring, 20 Lb. extra power recoil spring, a 5.5 Lb. factory strength striker spring and a 4 Lb. reduced power striker spring. Not for use in Generation 4.
Glock 19, 23, 32 - Pak contains 1 each 18 Lb. factory recoil spring, 22 Lb. extra power recoil spring, a 5.5 Lb. factory strength striker spring and a 4 Lb. reduced power striker spring. Not for use in Generation 4.
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