A buddy of mine who is buying his first AR asked my this question and I realized I'd never really thought of it that way. I'd always judged varying degrees of quality and went after what I wanted instead of trying to figure out what to avoid. With that said, I told him the brands that I respected (Colt, BCM, Fulton, Springfield, etc), but didn't have a concrete example of any brands that were "bad".
I realize this may be subjective, but can I get some feedback for him on which manufacturers are to be avoided based on your experience?
Thanks (and please be nice to each other-this isn't intended to rile up the partisans)