Centurion .308 rail for DPMS pattern

I have used this rail. It works fine and is reasonably sturdy. Has a barrel nut which does not require indexing which is nice. I will say that I did have to get a replacement barrel from them, as the original was dimensionally incorrect and would not tighten down fully on the barrel extension before bottoming out.

FYI this can also be fixed by using Aero 308 barrel extension shims (that are normally used for timing a barrel but that needs to be indexed).