Wolff Springs are designed and manufactured specifically for firearms. The proprietary spring material and design will increase performance and reliability compared to many OEM springs that you find stock on many pistols. Wolff Springs have been the leading gun spring manufacture for over 60 years creating a product you can trust.
This Wolff Springs 6lb striker spring (firing pin spring) is one pound heavier than the 5lb striker spring that come stock on Glock brand pistols. The heavier striker spring increases forward momentum of the striker to help with ignition of the primer. This added force benefits the shooter by reducing the odds of a light primer strike substantially and increasing the reliability of the pistol even with reloads or hard primers.
Fits all Glock Models.