ZEV Tech spring kits from Omaha Outdoors include ISMI recoil springs of various weights and the well-known ZEV Competition Spring Kit, Starter Spring Kit and ZEV striker and firing pin safety springs. These are all potentially useful to any Glock shooter, but especially to a shooter with a ZEV Tech pistol that has a lightened slide and wants to shoot in competition where every millisecond counts, these springs are basically a requirement.
Which Glock Recoil Spring Do You Need?
When choosing a Glock recoil spring, it’s important to know that the factory recoil spring for most Glocks has a rate of 16 lbs. If you’re shooting a Glock with a lightened slide, such as a ZEV Prizefighter or Dragonfly, it’s generally a good idea to lighten up the spring rate of your recoil spring, too. However, if you’re shooting +P or other, more powerful ammo, a heavier spring may be necessary to keep the slide from being battered against the frame. If you have a lightened slide and are shooting heavier ammunition, these two factors may cancel out. Given all of this, it’s a good idea to experiment with recoil springs and ammunition to ensure that your pistol remains reliable and easy to shoot. As a general rule, Glocks with significantly lightened slides shooting factory, standard pressure 9mm or light handloads should use recoil springs in the 11-13lb range. Those shooting major power factor loads with light slides might look at the 15lb springs, and major power factor loads with standard weight slides should use 17lb springs.
As for trigger and striker springs, the ZEV Competition Spring Kit is meant to be used alongside ZEV’s skeletonized striker and connector for a lighter and smoother trigger pull with faster lock times and other benefits which contribute to competition-winning scores, but for duty or carry use, these springs should be tested very thoroughly and it should be remembered that they are not all designed for use individually, but as part of a system with other modified components. If you experience problems with reset or a “dead trigger,” you might want to switch from a 2lb striker spring to a 3lb striker spring, for example. Again, it’s important to test any firearm component before betting your life on it.