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 Glock®17® Gen3 Slide Parts Kit are aftermarket parts made to the correct dimensions for proper fit, finish, and function in a factory spec slide. The extractor and firing pin are made from cast 17-4 SS. 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: