The ZEV PRO striker spring was designed as a replacement for the factory Glock striker spring and features a black corrosion resistant surface finish. When used in conjunction with a ZEV trigger kit this full power striker spring eliminates the chance of a light primer strike, making it ideal for use in duty or carry pistols. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.