Zaffiri Precision Upper Parts Kit for Glock 19 Gen 4

This upper parts kit from Zaffiri Precision includes all the small components needed to complete a Glock 19 Gen 4 slide build or replace worn parts in an existing slide. The kit contains the firing pin, firing pin safety, extractor, extractor plunger, spring-loaded bearing, and firing pin spring—everything required for a functional slide assembly.

Manufactured to OEM specifications, these parts are made from heat-treated steel with a black finish on applicable components. This is a drop-in kit that requires no fitting or modification. Builders should have basic Glock armorer knowledge or reference a detailed assembly guide. Replace these parts during routine maintenance intervals or when building a custom slide from the frame up.

• Part Type: Complete Upper Parts Kit
• Compatible Firearms: Glock 19 Gen 4
• Material: Heat-Treated Steel
• Finish: Black (where applicable)
• Installation: Drop-In (basic armorer knowledge recommended)
• Includes: Firing Pin, Firing Pin Safety, Extractor, Extractor Plunger, Spring-Loaded Bearing, Firing Pin Spring