If you do something to your car that makes it not street legal, they give you a 'fix it ticket', and you must fix the issue before you are allowed to drive it again. If you violate NFA rules, you go to jail for a decade or more. Cut and dried. No 'oh sorry I didn't know, I'll fix it immediately'.

That is why you ask. There isn't a law that says you must ask for approval. There's common sense that says I don't want to go to jail like those other people.

If I could go to jail for half my life for cutting my exhaust, you bet your ass I would ask the dmv for approval of my modification before I took it into their jurisdiction.

Edit: the NFA is not a 'reasonable person'. Logic does not apply.

If you do something to your car that makes it not street legal, they give you a 'fix it ticket', and you must fix the issue before you are allowed to drive it again. If you violate NFA rules, you go to jail for a decade or more. Cut and dried. No 'oh sorry I didn't know, I'll fix it immediately'.

That is why you ask. There isn't a law that says you must ask for approval. There's common sense that says I don't want to go to jail like those other people.

If I could go to jail for half my life for cutting my exhaust, you bet your ass I would ask the dmv for approval of my modification before I took it into their jurisdiction.