I know someone selling a 90mm cannon. $125,000 and its yours.
Knob Creek Video featuring the 90mm... as well a couple of privately owned, fully operational tanks. The 90mm is fired at about 1:28 into the vid. All perfectly legal and protected by the Constitution. Check some of the links on the side of the vid link for more Knob Creek goodies. I even have some personal vid near the bottom of my freerepublic homepage where I blow up some stuff.
You sure you have that tagline interpreted right?