To Hell with a constitution, huh? Hope you got your asbestos handy.
But we lost that war, unfortunately. More to the point, I don't particularly care for the constitution as a defense of anything. I do believe in the right to bear arms, but only for the many good reasons that we should have such a right (and the right to speech, privacy, etc).
That some government document coincidentally agrees with God's gift of freewill shouldn't mean anything.
As long as we are tying this in with Ayn Rand for some reason, the same should be asked of her "A is A" obsession: Why is the obvious treated as genius? Why is the Constitution so worshiped, given its highly redundant declaration that "We may talk..." (Gee thanks, Maaaay I???)