Hi William, this part features a colored anodized finish. These finishes are held to different aesthetic standards than parts finished in black anodizing or Cerakote. For more information on colored anodizing visit our Knowledge Center >>> https://support.aeroprecisionusa.com/hc/en-us/articles/14130696388375-Colored-Anodizing-Finishes-What-You-Should-Know
Stay safe & have a great day!

The coloring is definitely an Anodized finish & Not Cerakoted.

Hi William and welcome. The finish is Anodized Sir. Its anodized finish not only provides a unique aesthetic in Olive Drab Green but also adds a layer of protection against wear and corrosion. Cheers, stay safe and enjoy!
Features:
Works with standard AR 308 components and magazines
Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver.
Rear takedown pin detent hole is threaded for a 4-40 set screw
Bolt catch is threaded for a screw pin (no roll pin needed)
Integrated trigger guard
Selector markings will work with 45, 60 or 90 degree safety selectors
Accepts Battle Arms Development short throw safety selectors, but will work with any standard selector
No gap with aftermarket pistol grips
Includes:
Stripped M5 (.308) Lower Receiver
Nylon tipped tensioning set screw

Anodized.