The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with our M5 .308 lower receiver for a solid and dependable fit.Features: M4 Feedramps .2795 takedown pin holes DPMS High Profile (.210) Tang Includes port door and forward assistIncludes: M5 .308 Assembled Upper Receiver in OD Green Cerakote (info on Cerakote Firearm Coating)Specifications: Made In America? Yes Platform M5 Material Machined from 7075-T6 forged aluminum Select Your Finish Magpul OD Cerakote Compatibility Accepts standard AR .308 components Weight(s) 14 oz Other Barrel nut threads: 1 7/16"-16Anodizing may have imperfections due to the manufacturing process. These are not covered by our or Aero Precision's warranty. This does not apply to non-cosmetic blemishes. For more information, please refer to Aero Precision's website.