Being that the deadline to register assault weapons has passed in NYS. What if I didn't realize something was considered an assault weapon. Can it still be registered, or would it be seized when one tried to late register it? Has anyone tried? I imagine the only time they may allow late registration is if someone said they didn't know they have to register it. Therefore if the police happen to later find your in possession of one, and you say you didn't know, will they permit you to register it, or will they just seize it?