I hear this term used a lot. "DMR" help me get a better understanding of what the parameters are for a rifle to be considered "DMR" Would that be a 24in barrel or a 16 or 18 inch barrel? Bolt action, Or semi-automatic? How does a DMR rifle differ from a sniper rifle? Once again, is it barrel length or type of action? My personal opinion which means "nothing" is a light maneuverable 16 to 18 in barrel length semi automatic with some type of ballistic drop compensation scope. I am not talking about a rifle that's going to be carried from your car to the firing line. But an actual rifle that will be taken out and used in combat.