Look, we have our disagreements, same as any board, but we're not revisiting the old "What chainsaw size is best for an AR" argument. I'm sure someone's cousin will know a guy who knew a guy in Delta that they use a 16" in a room. Or some guy will have seen a DEVGRU sailor in the PX at FOB Fenty and they use a 20". Maybe someone has a "scientific" study discussing the validity of bar length in certain conditions, but we don't want any of that here. Take that argument to some airsoft forum.