That you were wrong.
Indeed, because nobody with a lick of sense thinks that "militia" in the Constitution refers to everyone, as opposed to the actual militia (i.e. the National Guard, which hasn't had its members use their own personal weapons for a long, long time).
The national guard is not a militia. I suggest you look at the definition of the word.
I do not contend the word militia refers to everyone. Yet a militia may be drawn from any of the people.
When the constitution affirms that the right OF THE PEOPLE, to own firearms it does not not say the right of some, government selected people can own firearms.
THE PEOPLE is a term also used in the first, fourth, and ninth amendments as well. In each case, it relates individually and is applied as such, to every person.
It stretches credibility to think they used the term with one meaning, then used it with another meaning, in the same document.
In Federalist 46, James Madison, an author of the Constitution, says "The advantage of being armed, which Americans possess over the people of almost every other nation."
He knew exactly what THE PEOPLE meant in the document of which he was an author.
There were state resolutions at the time that wanted a Bill of Rights to be in the Constitution, they wanted these rights, all of them, to apply to the "body of the people"
I suggest you look at Heller. The Supreme Court determines what the Constitution says, Heller says all of the people have the right to own firearms.
At the time of the writing of the Constitution, a militia was drawn from the people in the area where required.
The National guard is a standing military force which has close ties with and can easily be integrated with the army.
It does not constitute a militia.
All of the Founders, in one place or another, say that the people have the right to defend themselves from a tyrannical government. It is no coincidence that tyrannical governments make every effort to see that the people are unarmed.