I have been told that there are bullets made with a steel or tungsten "penetrator" which allows the bullet to pierce body armor or the kind of "bullet-proff" shields and vehicle coverings tht are sometimes used by police forces. I've also been told sales of such ammo are illegal but maybe I have misunderstood. As far as I know, it is not now legal to buy weapons without identifying yourself. It looks like this law will change that. Am I misunderstanding the Montana law??