The Zaffiri Precision Upper Parts Kit for Glock Gen 1-4 (Zaffiri Precision part no. UPK) gathers the small parts needed to complete a custom slide. It fits the Glock 19, 17, 17L, 26 and 34 in Gen 1 through 4. Zaffiri says every part is made by a US manufacturer to the highest tolerance of the original specification. The kit includes a nitride firing pin safety and a nitride extractor depressor plunger, and the guide rod and recoil spring assembly are not included. Zaffiri advises installation by a competent gunsmith.

Key Specifications

• The kit fits Glock 19, 17, 17L, 26 and 34 in Gen 1 through 4.
• It includes a firing pin spring and firing pin spacer sleeve for the striker channel.
• It includes a nitride firing pin safety and a firing pin safety spring.
• The extractor group includes a nitride extractor depressor plunger, a plunger spring and a spring loaded bearing.
• It also includes spring cups (2-pack), a firing pin channel liner, an extractor and a slide cover plate.
• Zaffiri says all parts come from US manufacturers.
• The guide rod (recoil spring assembly) is not included, so plan to supply your own.

Frequently Asked Questions

Which Glock models does the Zaffiri upper parts kit fit? It is listed for the Glock 19, 17, 17L, 26 and 34 in Gen 1 through 4.

Is the recoil spring assembly included? No. Zaffiri notes that the guide rod (recoil spring assembly) is not included in the kit.

Should I install it myself? Zaffiri says the kit is to be installed by a competent gunsmith.

Buy the Zaffiri Precision Upper Parts Kit for Glock Gen 1-4

A custom slide build comes down to the small parts, and this kit collects the springs, safeties, extractor and plunger in one place. Order it from our Lubbock, Texas gun shop for fast shipping, and browse more small Glock parts for your Glock.