 Well, it doesn't have a stock, so if you can carry it, it's a handgun.  [Note to gentle readers: a sense of satire and the sardonic is essential on this forum] You may be jesting here, but you would be surprised to know that the 50 BMG  RIFLE  ban is why it is actually legal to have a belt-fed M2 here. Just as long as you don't have a shoulder stock on it.