2nd Amendment: A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed.
It all depends on how you read this amendment.
Most of the Bill of Rights have to do with individual liberties, this particular right seems to have elements that go beyond merely guaranteeing individual rights.
As far as I can tell, this amendment recognizes that violent physical force is a basic building block of power.
This means that we don’t let the Federal government regulate guns in case the states ever want to overthrow the Federal government.
It seems a reasonable read of the second amendment to say that this right is given to the citizenry to protect State rights and so the States are free to at least regulate (but probably not ban) the citizens right to keep and bear arms (normally States are restricted by the Constitution in the same way that the Federal Government is (especially when it comes to individual rights).
There is an ancillary argument that this right preserves the ability of the citizens to revolt against all levels of their government, so even States should not be able to infringe on this right.
Overall, I would support 2nd amendment rights more vociferously if we had more bloody revolutions or had to fight off outside invaders more often. As it is, I see this right as being just slightly more relevant than the 3rd Amendment.
Originalists could just as easily interpret this amendment in any number of different ways because of the way the military was run back then and the legislative history of the Constitution and the Amendments.
This right is a bit antiquated but until we get a Constitutional Amendment, I don’t see how the Federal government can ignore the plain meaning of the Amendment and “infringe” on the People’s right to keep and bear arms (they can tread very carefully and try to limit interstate transport of firearms and control national sales of firearms but they’d have to be pretty careful not to overreach). Until we get an amendment that eliminates or alters the second amendment, feel free to protest regulation of the right to bear arms but don’t expect me to join any of your marches.