Zaffiri Precision Complete Upper Parts Kit Glock 17 Gen 5 Black. Each component is manufactured to precise specifications to ensure proper fitment and dependable function when paired with Zaffiri Precision slides or compatible aftermarket options. Designed for both custom builds and replacement applications this kit offers a straightforward solution for completing or refreshing your slide assembly. Kit includes firing pin (striker) firing pin spring spacer sleeve spring cups firing pin safety with spring extractor extractor depressor plunger with spring spring-loaded bearing channel liner slide back plate recoil spring assembly. Specifications for Zaffiri Precision Complete Upper Parts Kit: Manufacturer: Zaffiri Precision Color: Black Gun Make: Glock Gun Type: Pistol Features of Zaffiri Precision Complete Upper Parts Kit Includes all essential components to complete a stripped slide Manufactured to precise tolerances for consistent fitment Designed for reliable function across a wide range of use Optimized for use with Zaffiri Precision slides and compatible aftermarket slides Ideal for custom builds or replacement applications Package Contents: Zaffiri Precision Complete Upper Parts Kit What firearm models does the manufacturer say Zaffiri Precision Complete Upper Parts Kit is compatible with? The manufacturer says that Zaffiri Precision Complete Upper Parts Kit is compatible with Glock 43X Glock 48 Glock 19 Gen 5 Glock 17 Gen 5 Glock 17 Gen 4 Glock 19 Gen 3 Glock 19 Gen 4 Glock 17 Gen 3Zaffiri Precision UPK-G17G5: Complete Upper Parts Kit Glock 17 Gen 5 Black