Upper Parts Kit Glock 26 Gen 3-4

The Upper Parts Kit Glock 26 Gen 3-4 by Zaffiri Precision is a precision-engineered component set designed for shooters and gunsmiths building or restoring custom Glock 26 slides. Whether you're assembling a duty weapon, competition pistol, or personal defense firearm, this kit provides the critical internal parts required to complete your upper assembly. Built to original OEM specifications, these components ensure reliable fire control and consistent operation across both Generation 3 and Generation 4 Glock 26 platforms.

This kit includes a firing pin spring and firing pin spacer sleeve—two essential components that directly affect trigger reliability and reset performance. The firing pin spring manages the mechanical energy required for consistent primer strike, while the spacer sleeve ensures proper alignment and dimensional tolerance within the slide channel. All parts are manufactured to the highest precision standards by a US-based manufacturer, guaranteeing that each component meets or exceeds original Glock specifications. American-made construction means tighter tolerances, reduced wear, and predictable performance across thousands of rounds.

Law enforcement armorer, military personnel, and civilian shooters building custom Glock 26 platforms will find this kit essential for completing upper assemblies with confidence. Installation requires basic gunsmith knowledge and proper tools; the compact 0.1 lb kit integrates seamlessly with both Gen 3 and Gen 4 Glock 26 slides. For anyone replacing worn components, upgrading a used platform, or finishing a custom build, the Zaffiri Precision Upper Parts Kit delivers American-manufactured reliability at the foundation of your firearm.