Never did. But if that's the only way you know how to debate, go for it. My argument centers around the Miller court's "has some reasonable relationship to the preservation or efficiency of a well regulated militia".
How do you describe "common use"? Worn on the hip and cleaned once a month? (Oh btw, it's common military use.)
As a "militiamen" who may some day have to fight not only invaders, but possibly ones own government, ANY weapon that could be used to do so is fair game. A nail file, a zip gun, an M-134D mini-gun, a Howitzer 105mm.
To say that "government" may define what is and is not a "militia" weapon could have us fighting our own government with little more than squirt guns and harsh language.
Most definitely NOT what the Founders intended.