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