@Butrflynet,
Butterfly Net has it right. States have all powers not given to the Federal Government explicitly.
However, because of the overuse of the "Commerce Claus' by the Supreme Court, almost anything that crosses state lines can be regulated by the FEDS.
I am heartened by a movement in Montana which proposes to manufacture guns and ammunition to be used only in the state of Montana. This, as I undeerstand it, would preclude firearm regulation by the federal government.