{"product_id":"zaf-upper-parts-kit-for-glk-43x-49","title":"ZAFPRE Upper Parts Kit for Glock 43X\/48","description":"\u003cp\u003eThis 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.\u003c\/p\u003e\u003cp\u003eManufactured 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.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Upper Parts Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e Glock 43X, Glock 48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat-Treated Steel (firing pin, extractor), Spring Steel (springs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (basic disassembly skills required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Firing Pin Assembly, Extractor Assembly, Spring-Loaded Bearing, All Required Springs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZAFPRE","offers":[{"title":"Default Title","offer_id":48405691859199,"sku":"ZAFUPK-G4348","price":85.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5829610.jpg?v=1776440349","url":"https:\/\/doublestackstore.com\/products\/zaf-upper-parts-kit-for-glk-43x-49","provider":"Double Stack Store","version":"1.0","type":"link"}