Ok I get the AR15 can and does run dirty. Just needs to be lubed. Got that part. However, I am of the mind set of I prefer my stuff to be clean. Not to the point where I am taking every pin out such as a full detail clean, but a basic feild strip and clean as reasonably possible after every outting. I keep reading about people over cleaning the AR15 and how it is bad. So why is it bad? A PITA maybe but bad? How is it any worse than feild strip and clean a pistol after shooting it?