I was just recently looking at the laws in my state and found an interesting and frightening comment made by the ATF concerning states rights.
"ATF response
On July 16, 2009, the Bureau of Alcohol, Tobacco, Firearms and Explosives published an open letter to Montana Federal Firearms Licensees, clarifying
the bureau's position on the Montana Firearms Freedom Act. According to this letter,
"...because the Act conflicts with Federal firearms laws and
regulations, Federal law supersedes the Act, and all provisions of the Gun Control Act and the National Firearms Act, and their corresponding
regulations, continue to apply." The letter then summarizes ATF requirements for FFL holders.[6]"
The entire article can be found here.
Source
Other than the Second Amendment, granting the right to keep and
bear arms. Firearms control was not specifically granted to the Federal
Government in the Constitution, therefore the Tenth Amendment applies and the States have the exclusive right to make laws concerning firearms within
their borders, as long as the Second Amendment is not abrogated.