I have an upper I bought from someone who claims it is a BCM upper. I know the barrel is a really old BCM govt profile barrel from ID'ing the code.
The upper has a Cerro forge marking. It also has T-markings and is a flat-top upper.
I cant find anything else to ID the upper. There is no BCM logo on the upper, and it hasn't been painted. It shoots amazing, so I'm not overly worried if its a pieced together upper, but I was just curious if BCM ever had unmarked uppers.
it actually looks *exactly* like this one. so maybe I answered my own thread - unless this guy's is a fake.