Ok, so I still am not seeing the point you're trying to make. I know that certain weapons are not allowed in some areas. Certain weapons are not allowed in ANY area. If we're going to be making distinctions between which weapons are allowed and which aren't, I'd rather that individual states make the choice rather than the federal government.
So which are you in favor of? Banning some weapons or banning NO weapons? You didn't give a straight answer, you just quoted the bill of rights.
The world is not the same as it was 250 years ago. Black people, women, 18 year-olds, and people who don't own land get to vote. The Air Force is a separate entity from the Army. People can get from one end of this country to another in a few hours, but don't really have to because they can communicate over that distance instantly. Fire departments are a public institution, so you don't need to pay a fee to have your burning house saved. And weapons technology has advanced to the point where some weapons are so destructive that they cannot be trusted in the hands of citizens.
So yes, we've changed our minds when it comes to how much firepower you should carry. Would you prefer that decision be made in Washington by Zero or would you prefer your state legislature, who is at least somewhat answerable to you, decide?