General Discussion
In reply to the discussion: You must remember: What is most important about gun control [View all]OneTenthofOnePercent
(6,268 posts)yes. The tank itself is nothing more than an expensive vehicle. The cannon would be a NFA regulated "Destructive Device" (a non-shotgun firearm over .510 in caliber with a rifled bore), the M-2 .50cal topside gun would have to be a transferable NFA regulated "machinegun", the M-2 .50cal ammo is not restricted, and each of the main-gun artillery shells would qualify as NFA "Destructive Device" (and meet explosive ordinance safe storage requirements).
Each regulated NFA item requires an ATF Form 4 to be filled out, a $200 excise tax to be paid, and then you just have to wait for the approvals. I once saw a 90mm Recoilless Rifle artillery cannon for sale for $90,000 along with a Dillon 7.62 "Minigun" for sale for $200,000. Yes civilians can own these things LEGALLY and use them as well given a safe (large) private environment - all it takes is money patience and the right paperwork.
And did you know there are NO restrictions on smoothbore cannons? You can build your own cannon, load bowling balls into it, and launch them over a 1/2 mile all day long!