The Zev Technologies™ Competition Spring Kit
The Zev Technologies™ Competition Spring Kit contains a heavy trigger spring (heavier is better, as it assists with trigger pull),
A reduced power firing pin spring, and a reduced power firing pin safety spring.
Installation of the ZEV Technologies competition spring kit provides a lighter and smoother trigger pull for your Glock®;
use in conjunction with the ZEV Technologies pro connector for best performance.
A ZEV spring kit comes with one of each of the following,
a two pound Striker spring, Firing Pin safety spring, & Trigger spring
Intended to fig Gen1-Gen4