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UC Marked Forged Upper Receiver

Inventory: Out of Stock
Price: $125.00

As with our Mega Arms limited edition Umbrella lower receivers, our forged uppers are manufactured for us by AO Precision, LLC until our standard production is in full swing. AO is a principal Government supplier of M16 and M4 components and these uppers are built to contract spec. They feature machined M4 feedramps and come fully assembled with round forward assist and port door/dust cover installed. And we intentionally had AO Precision leave off the traditional "T" markings on top of the Picatinny rail so they would match unmarked handguard assemblies (KAC, Vltor, etc.) and likewise prevent mismatched engraving styles.  A subtle "UC" engraved on top of the rail marks these as an Umbrella Corporation product. As with all of our parts, these carry an unconditional guarantee against material defect and manufacturing failure. Barrel assembly should be performed by a qualified Armorer: Mil-Spec AeroShell 33MS barrel nut grease is included.


  • Precision machined from Aerospace 7075 Aluminum Alloy forging, T6 Temper
  • Certified MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc (Nickel Acetate) Seal
  • Mil standard 1913 Picatinny accessory rail, no “T” markings
  • M4 feed ramps (requires corresponding barrel extension)
  • Dry film lube bore coating over anodized substrate
  • Compatible with Mil-Spec AR-15 platform lower receivers
  • Dimensional accuracy inspection
  • Sharp edges meticulously de-burred by hand
  • Inert media blast for uniform finish
  • Text/markings high power laser engraved
  • Ejection port door and forward assist installed
  • All components, material and packaging made in the USA
  • First Generation