Upper Parts kit for Glock 17 9mm This is a great option for a new build or to replace all of your worn-out slide parts and have your pistol functioning like new! Works great with aftermarket slides and P80 lowers The Upper Slide Parts Kit for the Glock pistols includes all of the replacement parts you need to rebuild your slide assembly except for the barrel and sights. Kit Includes: * Firing pin * Firing pin spring * Spacer sleeve * Firing pin spring cups * Extractor depressor plunger * Extractor depressor plunger spring * Spring loaded bearing * Firing pin safety * Firing pin safety spring * Slide cover plate * Extractor * Channel Liner * Recoil Spring Parts that are proven to work –