are you offended?
I like Colts, and you're right. An M16A4 is made by FN.
But that's irrelavent, because a BCM is still made to from a higher quality standpoint than Colt. Its completely obvious not just from the finish The finish protects a gun, but you can look at a weapon and tell the barrel is screwed into the receiver properly, the FSB is pinned to the weapon, the barrel has a mil-spec finish on it (i.e. the BCM's barrel is smooth, where as a bushmasters or stags is textured)

