Description The Aero Precision M5 Threaded Assembled Upper Receiver in Anodized Black is a semi-complete AR-10/M5 .308 upper forged from 7075-T6 aluminum and precision machined for standard .308 components. It ships with the port door and forward assist hardware preinstalled and includes M4 feedramps and DPMS-compatible features. The receiver is finished with a black hard coat anodize for durable corrosion resistance and consistent appearance. Designed for big-bore AR-10 builds, it pairs with M5 lowers and DPMS-pattern parts to simplify assembly of a .308 / 7.62 NATO rifle. Key Specifications Caliber is .308 / 7.62 NATO for compatibility with standard AR-10 cartridges. The receiver is forged from 7075-T6 aluminum for strength and stability. The finish is a black hard coat anodized surface for wear resistance. Designed to fit the AR-10 M5 platform for broad parts compatibility. Product type is a semi-complete assembled upper receiver. Includes port door and forward assist hardware preinstalled. The upper features M4 feedramps to support reliable feeding. Equipped with .2795 takedown pin holes (DPMS size) for DPMS compatibility. Built with a DPMS high profile (.210) tang to match DPMS-pattern lowers. Sights are none; optic ready to accept a wide range of optics and mounts. This M5 assembled upper provides a robust, high-quality foundation for precision and hunting-oriented .308 builds. With DPMS-compatible geometry, hardened anodized finish, and preinstalled controls, it reduces fitment variables and accelerates the build process while supporting a broad selection of barrels, handguards, and bolt carrier groups. For shooters assembling a reliable big-bore platform, this Aero Precision upper balances durability and compatibility without unnecessary extras.