No it does not. It exist because history had proven multiple times that to subjagate a population a ruler always used a standing army to control the citizens. Generally disarmed or poorly armed citizens. The idea behind the 2A is that the people outnumber and outgun a standing army.
We are governed by our consent, when we give that consent there are rules the representatives of the people are to follow. It's called the Consititution. If our government steps outsides it's mandate We the People can withdraw our consent until such time as the government returns to it's rightful place.