Zaffiri Precision Upper Parts Kit for Glock 19 Gen 1-3

Building a custom Glock 19 upper receiver demands quality parts that meet factory tolerances and function flawlessly. The Zaffiri Precision Upper Parts Kit for Glock 19 Gen 1-3 delivers a complete set of components machined to exacting standards, all manufactured in the USA. Whether you're assembling a match-grade slide or refreshing internals on a shooter you trust, this kit bundles the critical upper assembly hardware so you're not hunting individual pieces from different sources.

Zaffiri Precision has built a reputation for attention to detail, and that shows in how these parts fit and perform. Every component is held to original specification tolerances, which means drop-in compatibility and reliable function. The kit includes everything from the firing pin and its spring to the extractor assembly, plunger springs, slide cover plate, and recoil spring—basically the complete upper end minus the slide itself. All parts are domestically sourced and made, giving you transparency on origin and quality control.

This is a kit for shooters who know their way around a Glock or work with a qualified gunsmith. Installation requires competence; Zaffiri Precision recommends professional assembly if you're not experienced with firearms work. Once installed, you'll have a reliable, American-made upper that performs.

Key Features

• Complete upper parts kit—fires pin, springs, extractor assembly, plunger, and slide cover all included
• Manufactured to original factory tolerances for proper fit and function
• 100% American-made components
• Billet aluminum slide cover plate
• Compatible with Glock 19 generations 1, 2, and 3
• Ideal for custom builds, slide finishing, or upper assembly replacement

Specifications

Frequently Asked Questions

What's included in this upper parts kit for Glock 19?

The kit contains the firing pin, firing pin spring, firing pin spacer sleeve, spring cups (2), firing pin safety, firing pin safety spring, extractor, depressor plunger, depressor plunger spring, spring-loaded bearing, firing pin channel liner, slide cover plate (billet aluminum), and recoil spring assembly. It's everything needed for the upper end of the gun except the slide.

Will this kit work with my Glock 19?

Yes, this kit is compatible with Glock 19 generations 1, 2, and 3. Note that Zaffiri Precision components are not manufactured or endorsed by Glock, and installation should be performed by a competent gunsmith.

Can I install this myself?

These parts are designed for installation by someone experienced with firearms assembly. If you're not comfortable taking apart and reassembling a Glock upper, work with a qualified gunsmith. Improper installation can lead to malfunction or safety issues.

Why choose Zaffiri Precision parts?

Every part in this kit is manufactured in the USA to original factory tolerances, ensuring reliable fit and function in your custom build or refresh. American manufacturing gives you consistency and transparency on the source and quality of what goes into your gun.