The point is, we can't take these for granted or as fact, because the very basic truth is OUR right to bear arms is a Man-Made concept, granted us by the State
That's a pretty confounding proposition you offer there . . . Who is the "they" of the state, where did "they" come from and where did "they" get this power to mete out particular rights to the people and condition them?
How can rights, because they are a construct of the mind be subject to the whims of a structure of government . . . Also a construct of the mind?
Perhaps your theory could be said to exist in a dictatorship or monarchy but in the USA, the structure of the "state" followed a specific intent.
In the USA, the "state" was formed by the people with a primary intent of securing the pre-existing rights of the people. The citizens, toward that end, embraced principles which guided their forming of the structure of the "state". Since a fundamental principle is
ALL POWER EMANATES FROM THE PEOPLE, the
only powers that the state may exercise are those limited powers conferred by the people to government via specific enumeration in the Constitution.
If no power was
ever conferred to the "state" to impact the personal arms of the private citizen, then none exists.
Therein the right to arms is defined, because rights are exceptions of powers never granted.
Under the US Constitution the concept that the "state" grants people their rights is nonsensical . . . How can the "state" give the people something the people never parted with?
and if they REALLY wanted to (try) they could take it away.
When the state tries to "take away" a right it is acting beyond the powers granted to it. The regular process is to contest such a law or action in court and hopefully have it declared unconstitutional and invalid.
If an illegitimate action of the state can not be restrained by the balance of powers in government, the people retain the right to rescind their consent to be governed. If that can not be done peacefully then the 2nd Amendment guarantees that the people possess the means to reclaim their sovereignty with violence.