The Zaffiri Precision Upper Parts Kit (UPK) supplies the internal parts needed to complete a custom or stripped slide for the Glock 17/34 Gen 4. It is a convenient way to finish an aftermarket slide build in one order without sourcing each part separately.
- Fits: Glock 17/34 Gen 4
- Includes: firing pin and spring, firing pin spacer sleeve, firing pin channel liner, spring cups, safety plunger and spring, extractor, extractor depressor plunger assembly, slide cover plate, guide rod
- MPN: 17.34.4.UPK
