According to the Constitution, the federal government has no weapons jurisdiction at all.
In your subjective, wrongheaded opinion.
In fact, the Federal government has the authority to regulate firearms, provided Federal firearm regulatory measures comport with Second Amendment jurisprudence.
The 4473 and NICS background check are proof of that.
Wrong.
The 2nd amendment is quite clear.
The states, municipalities, neighborhoods, and even individuals need to protect themselves, and THEY are the militia. The feds can't create the National Guard and then try to claim you don't need a militia any more.
The founders were quite clear they did not want or trust a mercenary federal standing military force that worked for pay, because they would do illegal things for money, like invade Iraq on WMD lies.
The federal government has no legal authority to regulate weapons at all, not a single bit.
The 4473 and NICS are totally illegal.
The need for weapons is local, so then the regulation of weapons has to also be local.
That is what the founders wrote, and that is what we should be doing now.
The BATF is illegal and should not exist at all.
To be legal it would have to have been explicitly authorized in the Constitution, and it isn't.
It is a modern violation of the constitution.