A4 UPPER RECEIVER ENGRAVED HARD COAT ANODIZED

December 2, 2019 AR-15 Parts

The M4 upper receiver is a fully machined hard coat anodized AR top, forged from T7075 aluminum and featuring M4-type feed cuts for reliable feeding! The receiver itself also features T-marks on the picatinny rail, black finished, etched using a leading industry 3-axis galvo fiber direct diode laser. This is an upper finished to Military Specifications & Standards. Stripped for more options for completing your AR build! Compatible with standard mil-spec AR lower receivers and components, this is a high-quality receiver available at an awesome price.

  • Precision machined from Aerospace 7075 Aluminum Alloy forging, T6 Temper
  • Certified MIL-A-8625F, Type III, Class 2, Hard Anodize Coating, Flat Black Dye, Non-Reflective, NiAc (Nickel Acetate) Seal – Eddy current & Taber Abrasion tests performed to ensure coating integrity
  • Kaiser chemical composition certifications for the 7075 Aluminum
  • M4 feed ramps
  • Dry film lube bore coating over anodized substrate
  • Compatible with Mil-Spec AR-15 platform lower receivers
  • Inert ceramic media blast for uniform finish
  • Laser Marked E2 Logo
  • All material, components and packaging made in the USA
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