Thank you for the quick response. I understood that, but, for instance, when people would mention a Noveske lower with an unnamed upper, they called it an AR-10. It just seems when ever DPMS is brought up by someone with a question, AR-10 is taboo. I have even seen someone say that a rifle with a DPMS lower is not an AR-10, it's a .308. I just thought it might be some kind of design thing, besides the all encompassing Armalite trademark issue.