If you sadly live in New Jersey, New York, Maryland or Massachusetts and actually like firearms, your list of legal AR-15s can probably fit on the bar napkin you drink your sorrows away on. OK, that is slightly over the top, but legal ones are few and far between. Ruger is adding to that list with a new AR-556 with a MonsterMan grip. Some notable features, or modifications depending on how you look at it, that make it legal in the aforementioned states are: -Threaded Barrel (1/2″ x 28 TPI) w/ Thread Protector [No Flash Hider or Muzzle Device]...