Registering the vehicle must likely.

Nothing. If you're only going to use it non-commercially on private property, there's almost nothing stopping you. You can even have an entire tank shipped in as long as it doesn't have any shells [1] or secondary guns, and you don't have to take it apart or anything.

The question is: is it street legal and can you legally get it registered to drive afterwards? Once you ask that question, tons of regulations come into play ranging from axle weight to emissions standards to safety requirements.

[1] you gotta have an ATF destructive devices license and follow state specific laws if you want to fire the main cannon

> you gotta have an ATF destructive devices license and follow state specific laws if you want to fire the main cannon

Okay, now that’s a rabbit hole if I’ve ever seen one.

Does the owner of the tank need these things? Or the driver? Or can the driver/owner just be a regular dude, but call in an expert to sit in the tank alongside them as its gunner? And do the rules change if the driver tells the gunner when to fire?

This is called the "kit car" loophole, and some people have successfully used it (e.g. the Nissan Skyline R34 GT-R in The Fast & the Furious movie was brought over like this)