Once again, I am not making an argument that Full auto weapons should be legal/illegal. My personal feeling on the subject is that they should be legal, but regulated more heavily than semi-auto firearms. They are, in fact, inherently more destructive than semi-auto firearms, which is why our troops tend to use select-fire/ automatic weapons. They are an entirely different class of firearms. You are free to disagree with me all you like on this topic. But please do not mix your arguments with the next, completely separate issue.
Every time a discussion begins like the OP started, people take it way too far, because they are sure that the individual's right to keep and bear arms is without any limitation whatsoever. This is incorrect, and it's not an opinion, it's a fact. None of your rights are unlimited. The freedom of speech is not unlimited. Libel is illegal. The freedom of the press is not unlimited: slander is illegal. The freedom of religion is not unlimited: human sacrifice is illegal.
Your individual rights end where another's individual rights begin. This gets complicated, but we have the legal system to sort it out. It isn't a perfect system, and you may not agree with where current firearm regulations stand, on a national, state or local level. But if the basis of your thinking is, "I was born with the right to bear arms, which is limitless, and therefore no regulation whatsoever is justifiable" you are beginning your argument from a position that is fundamentally flawed.