I'll take it one step further and say that the 2nd amendment supports what Jefferson wrote in the Declaration. It supports the inalienable right to Life (self-defense), and the inalienable right to Liberty (protection from tyranny). Without those two, there can be no inalienable right to pursue Happiness.
Remember that the Preamble to the Constitution says that We the People established the Constitution to secure the "Blessings of Liberty" for ourselves and our Posterity. The capitalized Liberty refers to the inalienable right to Liberty from the Declaration, and the capitalized Blessings refers to the rights as being endowed by the Creator, which is what makes them inalienable.
-PJ
-PJ