New and improved kit now comes with a billet firing pin. Contains all the parts you need to complete the innards of an aftermarket slide or refurbish a factory slide to like-new standards. All the parts in our GlockA(R)17A(R) Gen 3 OR Gen 5 Slide Parts Kit are aftermarket parts made to the correct dimensions for proper fit, finish, and function in a factory spec slide. The extractor is made from cast 17-4 SS. The firing pin is made from billet to improve the strength. The extractor depressor plunger and firing pin safety are machined from bar stock. Includes channel liner tool to properly install the channel liner. Kit Includes: Extractor Extractor Depressor Plun Mfg: Brownells