Well, dear, then you obviously haven't read The Federalist Papers if you truly "don't understand". I'll clue you in: we SHOULD be able to own them to shoot and kill any bastard who tries to take them or any other right away from us. Unfortunately, there is an unconstitutional law preventing us from such ownership.
That being said, I SHOULD be able to own military assault weapons, but they can no longer be manufactured for civilian ownership. And to own one of the relics, one must jump through piles of red tape, accept the ATF probe permanently inserted into one's rectum, and pay an annual 500 dollar tax per weapon. The Constitution is not open to interpretation, the context is IN The Federalist Papers. And it was clear, most abundantly clear, why owning weapons of the same type as our own military is a natural, God given right of the American Citizen. There IS no argument, EFF YOU
*raising and clapping hands with an entire audience while pards fire rounds into the ceiling, cheering*
THAT'S OUR KINDA STUFF!