Well some historians say the 2nd amendment isn't about guns, which everyone already had back then, but says states should have their own military.

"Bear arms" means militarization. Not owning a gun. But using a gun.

https://www.brennancenter.org/our-work/research-reports/how-nra-rewrote-second-amendment

It actually was the nra lobbying that changed public and legal interpretation.

Owning a gun does little against tyranny.

But a state militia does.

That's what it actually meant.

The Second Amendment consists of just one sentence: “A well regulated militia, being necessary for the security of a free state, the right of the people to keep and bear arms, shall not be infringed.”