The Feds have no legitimate role in regulating firearms.
“Notwithstanding the Constitution’s typo, the states delegated only 16 unique, discrete powers to the new federal government, and all of those powers concern nationhood. The Constitution authorizes the feds to regulate in areas of national defense, foreign affairs, keeping interstate commerce regular, establishing a post office, protecting patents and artistic creations, and keeping the nation free. The areas of health, safety, welfare and morality were not delegated to the feds and were retained by the states.” [Washington Times]