Forged Upper Receiver

Our latest forged upper receivers are manufactured to military contract specifications with machined M4 feed ramps. Available stripped or assembled with the forward assist and port door installed. We intentionally leave off the traditional “T” markings on top of the Picatinny rail, so they better match unmarked handguard assemblies and likewise prevent mismatched engraving styles. Our deep laser engraved logo on top of the rail marks these as an Umbrella Corporation product. As with all our parts, they carry an unconditional guarantee against material defects and manufacturing failure. Barrel assembly should be performed by a qualified Armorer: Mil-Spec AeroShell 64 barrel nut grease included.

Specifications

• 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
• Kaiser chemical composition certifications for the 7075 Aluminum
• Anchor-Harvey certifications for raw forgings verifying physical properties and aged condition
• Post machining operational reports
• Anodizing QC certificates of compliance
• 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
• High power, deep laser engraved Umbrella logo
• All components, material and packaging made in the USA
• Cerakote H-267 FDE on top of anodizing, optional