The stated purpose of such laws is to keep devastating weapons out of the hands of criminals. The real purpose of the law is to grow the power of the idol-state, and to shrink the power of those capable of resisting it. This sleight of hand matters because what genuine Christian wants criminals to have devastating weapons? And what genuine Christian wants a bigger and more powerful idol-state? There are two different questions on the table, and so it matters which one is the real one.