Glock® OEM Large Frame Upper Parts Kit PF45 G20 G21


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Glock® OEM Large Frame Upper Parts Kit PF45 G20 G21

Fits Polymer80 PF45 Large Frame Slide

Arm or Ally has assembled this handy Gen 3 Glock® OEM Large Frame Upper Parts Kit perfect for anyone wanting to finish out their Polymer80 PF45 G20 and G21 slide. Glock® OEM parts are brand new and machined to exact specifications to ensure a functional pistol. Each Factory Glock® OEM large frame UPK includes the following Glock® Factory Parts:

  • Firing Pin
  • Firing Pin Spring
  • Firing Pin Spacer Sleeve
  • Spring Cups
  • Firing Pin Channel Liner
  • Safety Plunger & Spring
  • Complete Extractor with LCI
  • Extractor Depressor Plunger
  • Extractor Depressor Spring
  • Spring Loaded Bearing for LCI
  • Slide Cover Plate
  • Gen3 Recoil Spring and Guide Rod Assembly

Product Information


G20, G21

Made in USA







G20 – 10mm, G21 – .45 ACP

Arm or Ally

Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and was named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!

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