The Supreme Court ruled that the nfa was legal because a sawed off shotgun wasn't considered a common weapon in usage with the militia. It was that ruling that allowed them to restrict those weapons.
If another gun ban is attempted, could it be cited that an AR-15 IS a common weapon in use of the militia, and therefore constitutionally protected???
But the fruit of the Spirit is love, joy, peace, patience , kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law.