I thought that's what you thought by shouting, "it is part of the FOUNDATIONAL RIGHTS OF BEING AN AMERICAN, FREE FROM SUBSERVIENCE TO A TYRANNICAL KING OF ENGLAND OR FUTURE AMERICAN TYRANT".
If you really think it's about the states' defending themselves against the federal army, it's still a long historical and legal jump to allowing possession by crazy individuals of machine guns.
And you will find many, many takers of that argument...even me! However, we have a Supreme Court that, every now and then, is faced with a Second amendment issue. The last big case to get there was Heller, and the Court determined that 2A included an individuals right to defend himself through the use of a personal firearm. Changing that will be a Herculean task, even if a case gets to SCOTUS, as they’re loathe to change “settled law.” That means if one SCOTUS ruled in it one way, they will generally leave it alone.
However, just as you might find your argument compelling, so there are others that point to the specific plan gauge of 2A and complain it is ready being violated!
“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.”
They complain numerous laws on the books DO INFRINGE on 2A, and they should be struck down by SCOTUS. However, one has to sue in lower court and work ones way up to get there, and that has not been achieved yet.
If the right to bear arms derives from pre-revolution English rights, then the idea that America was BORN this way, you have to wonder why the parent country doesn't have the same issues with guns.
It’s not me making it up, it’s what was written in the Federalist Papers that helped generate the laws. Back then, they wrote to each other discussing ideas regarding formulating ways of dealing with the issues of a country built on the idea of freedom from tyranny. Those letters and papers provide insight into the whys and wherefores of the new country, and how they were all still deeply scarred from the War of Independence and the perceived tyranny that came from absolute power. They wanted to make certain America could never experience that again, either at home or from abroad. It is all why there is a very series thing called “States Rights” in America, which basically creates 50 different countries within the Union.
Ask yourself the question and the answer will come to you.
HINT: Freedom & Monarchical Control