Quoting a study on natural causes of death from 2011, not at all relevant to the discussion of stopping people from murdering others with guns. Outside of the home, there is no reason for guns beyond single shot hunting rifles and within the home, anything beyond a shotgun or small caliber handgun is pointless. End it there.
Our country can have a strong national defense, a strong reformed state managed law enforcement, but it doesn't need semiautomatic firearms in the hands of its civilians beyond a well regulated militia. Everything else can get fucked.