ZAFPRE Upper Parts Kit for Glock 43X/48

This ZAFPRE upper parts kit provides all the internal components needed to complete a Glock 43X or 48 slide assembly. Whether you're building a custom pistol from the frame up, replacing worn factory parts, or keeping critical spares on hand, this kit includes the firing pin assembly, extractor assembly, and spring-loaded bearing—the essential upper internals that cycle rounds and strike primers. Ideal for custom builds using aftermarket slides or for shooters who want OEM-specification replacement parts without sourcing components individually.

Manufactured to Glock specification tolerances with heat-treated steel firing pin and extractor components. All springs are correctly tensioned for reliable function. This is a drop-in kit for anyone comfortable with basic slide disassembly; no gunsmithing or fitting required. Follow standard Glock armorer procedures for installation and function check before live fire.

• Part Type: Upper Parts Kit
• Compatible Firearms: Glock 43X, Glock 48
• Material: Heat-Treated Steel (firing pin, extractor), Spring Steel (springs)
• Finish: Black Oxide
• Installation: Drop-In (basic disassembly skills required)
• Includes: Firing Pin Assembly, Extractor Assembly, Spring-Loaded Bearing, All Required Springs