I have an upper that is supposed to be a Bushmaster 16". It has an A1 receiver with an "A" that sort of looks like the Alcoa sign on the right side underneath the horizontal adjustment and the barrel is marked "B MP 5.56 NATO 1/9 HBAR". The muzzle break is pinned Mini Y comp.
This afternoon, I was in a gun shop and they had one identical to mine with the exception that it was a 20" and the guy was saying that it was a DPMS. All of the markings were the same. It, however, was on a Bushmaster lower receiver.
The only other markings that I have found is a "crown" on the left side of the front sight base to the rear of the gas tube pin.
What is the deal? Any ideas? Any other markings that I missed that could be helpful?
It doesn't really matter but I just want to know for sure so that if I sell it as a Bushmaster somewhere down the road, that I don't have to worry about some guy named Bruno beating the crap out of me for telling him something that isn't correct?