I seriously recommend everyone checking this out. If you had any doubts about BCM, I'm sure this will make them pass. I got a little mini catalog with the "Filthy 14" test in it from BCM when I ordered one of their charging handles. Amazing stuff.A quality AR-15 is not "fragile," will not "break easily" and is quite capable of running reliably when dirty. Reference the "Filthy 14" test.