Genuine Glock® 19 Upper Parts Kit OEM Gen 5 from Marine Gun Builder
Never gamble with your safety—choose authenticity, reliability, and performance with Glock OEM parts. Backed by 40 years of proven excellence, Glock’s factory components ensure flawless dependability, safety, and longevity in your firearm.
 
Don’t Get Scammed—Beware of Counterfeits!
Ebay is flooded with so-called "OEM" kits that contain counterfeit firing pins, fake extractors, and substandard springs. These imitation parts lack Glock’s rigorous quality control, leading to high failure rates, malfunctions, and potential safety hazards. When it comes to firearm reliability, cutting corners isn’t an option. Read my full blog post—"Glock OEM vs. Knockoffs"—to learn how to identify and avoid fake parts.
 
This Authentic Glock 19 Gen 5 Upper Parts Kit (UPK) OEM guarantees perfect fitment, function, and compatibility with Gen 5 Glock 19 slides, ensuring your firearm performs at factory specifications.
 
MGB Guarantee:
I personally inspect every kit for first-time quality. When you buy from MGB, you are purchasing 100% authentic Glock® OEM products, assembled by a Certified Glock Armorer.
 
All Parts in This Kit Are Factory OEM Glock® and Include:
Recoil Spring Assembly – SP39310
Firing Pin Assembly– SP39327 (Pre-Assembled)
Extractor Depressor Plunger – SP03448 (Pre-Assembled)
Firing Pin Safety w/ Spring – SP33782 (Pre-Assembled)
Backplate – SP33784
Extractor – SP33774
Channel Liner – SP01148
 
Unmatched Value:
✔ Free Shipping
✔ Armorer Assembled for Drop-In Fit
✔ Free Returns for ANY Reason
✔ Ships Within 24 Hours (Mon-Fri)
 
Glock 19 Upper Parts Kit OEM UPK Gen 5 – G19 UPK by MGB
 
Listing Disclosures & Policies:
1. USA Shipping Only - No International Sales
2. We will not ship to alternate names/addresses - Shipping is to buyer and address on their Credit Card account only
3. Slides, Frames, Blocks, Rails, or other items in pictures are for illustration only and not included with the OEM Upper Parts Kit.

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