A4 UPPER RECEIVER ENGRAVED NO COAT

December 2, 2019 AR-15 Parts

This engraved M4 upper receiver is precision machined to exacting standards, and comes raw. Machined from 7075 aluminum, and etched using a leading industry 3-axis galvo fiber direct diode laser, this is an upper finished to Military Specifications & Standards.

  • Precision machined from Aerospace 7075 Aluminum Alloy forging, T6 Temper
  • No Coating – End user can customize firearm
  • Kaiser chemical composition certifications for the 7075 Aluminum
  • M4 feed ramps
  • Compatible with Mil-Spec AR-15 platform lower receivers
  • Inert ceramic media blast for uniform finish
  • All material, components and packaging made in the USA
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