Serial # 83xx, you tell me.
(I don't know how to tell the difference on these)
If I were to guess, my guess would be cast.
If cast, Will DPMS remanufacture in a forged reciever?( with same ser. #? I have heard that some will replace a "Broken" reciever with the same serial # on a new one.
This one fires and functions fine. I have put a few hundred rounds through it( to give my Colts a rest),
No issues with this DPMS