The Firing Pin Assembly Kits for Glock feature the components needed to quickly and easily replace your firing pin parts. The kits are available for all models of Glock, and are available in configurations: 9mm, 357 Sig / 40 S&W / 45 GAP. Firing pin safety and spring is included as well. All parts are genuine Glock components. Mfg: Glock SPECS: Fits – 9mm, 357 Sig / 40 S&W / 45 GAP Glocks. Includes: Firing pin safety & spring, firing pin spring, firing pin, firing pin spacer sleeve and firing pin spring cup (2).