The perfect kit for anyone looking to upgrade, repair, or build their Glock 43 (G43), this OEM Glock 43 Upper Parts Kit (UPK) is an ideal choice. Each G43 OEM part in this kit has been carefully sourced from Glock, ensuring it meets the manufacturer’s quality and performance standards.
 
Professionally assembled by Marine Gun Builder, a certified Glock armorer, this G43 Slide Assembly Kit provides every component needed for smooth and reliable function, whether for custom builds or replacements.The Glock G43 OEM UPK includes all critical parts for a complete upper slide assembly, such as the firing pin, extractor, and firing pin safety, making it an essential option for those wanting to ensure compatibility with factory Glock components.
 
Perfect for Glock 43 replacement parts or custom slide builds, this Glock 43 Upper Parts Kit OEM is ready to enhance performance straight out of the box. Buy your Glock 43 OEM slide parts kit today to enjoy authentic Glock quality and the peace of mind that comes with expert assembly by Marine Gun Builder, trusted in the industry for precision and reliability.
 
Beware of listings on eBay that advertise cheap Glock 43 upper kits. These are imported clones from Taiwan, which have a notoriously high failure rate and fall way short of Glock’s safety standards. The slight savings come at a high cost to reliability and safety, as these knock-offs lack the precision and durability of authentic Glock OEM parts. A significant portion of our business comes from Patriots who have already been burned with junk parts and come to us seeking quality OEM components to fix their Glock firearms. Please be sure to carefully examine our listing photos, where we explain in detail the tell-tale signs of counterfeit parts—such as improper markings, low-quality finishes, and mismatched components. These often reveal the difference between genuine OEM and imitation kits. Whether you choose MGB to be your parts provider or not, we are always here to help you with Glock education.
 
For the best in quality and safety, rely on Marine Gun Builder’s Glock 43 UPK assembled with Glock-Certified expertise.
G43 Kit Contents:
Firing Pin
Spacer Sleeve
Firing Pin Spring
Spring Cups
Extractor Depressor Plunger
Extractor Depressor Plunger Spring
Spring Loaded Bearing
Firing Pin Safety
Extractor
Back plate
Recoil Spring Assembly
 
*Note: Glock slimline models do not use a channel liner
 
Compatibility:
Designed specifically for Glock 43 models
All Glock 43, 43X, and 48 Slides (oem and aftermarket)
 
Why Choose Genuine Glock OEM Parts?
Safety - OEM parts are the SAFEST Choice
Perfect fitment and function
Ensure optimal performance and reliability
Maintain firearm value and integrity
Backed by Glock's reputation for excellence and durability
Precision-engineered for seamless integration with your Glock firearm
 
Upgrade Your Glock 43 Build: Experience the confidence and peace of mind that comes with owning genuine Glock OEM parts. Whether you're customizing your Glock, refreshing an older Glock, or building from scratch, our Glock 43 OEM Upper Parts Kit has everything you need for a flawless assembly.
 
MGB's Unparalleled Commitment to the Patriots of This Nation
Free Shipping: Enjoy no-cost delivery on every order.
Ships Within 24 Hours (Mon-Fri): Get your parts fast with same-day shipping on weekdays.
Certified Glock Armorer Assembled: Each kit is expertly assembled by Certified Glock Armorer MGB.
Free Returns for ANY Reason: Shop with confidence knowing returns are hassle-free.
#1 Glock Educator: Leading the industry as the top educator of Genuine Glock parts.
 
"Glock 43 Upper Parts Kit," "OEM," "G43 UPK," and "Complete," Authentic Glock parts for Glock 43 models.
 
Listing Disclosures:
1. No International Sales - USA Shipping only
 
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