You would be subject to fines and up to one year in jail, or both, for violating this law. Any criminal intent involved increases penalties. We strongly recommend that people use only FedEx or UPS to ship these types of knives. And I thought that in the United States we lived in a free society, but it's still illegal to carry a knife.
It seems that today you could be arrested for almost anything, but nevertheless people who are committing real crimes get away with it and people who try to defend themselves take the beating. The worst thing that's going to happen is that customs confiscates it. You're not going to be fined or arrested or anything. Laws are almost never enforced anyway, chances are you'll have the knife in your mailbox someday soon.
Don't show it around and you'll be fine. I get assisted knives that aren't for sale in New York because spring-assisted knives are illegal, but manual flaps? There is nothing in the New York City administrative code that prohibits the transportation and sale of manual flaps as long as it is smaller than 4″ and has a single-sided blade. If I know that they live in an area where a certain knife is illegal, I refuse to sell it, but since I can't know all the laws of local jurisdictions, I base the laws at the state level, the buyer is responsible for the laws where they will own and use it, and if they get into trouble there, there's nothing anyone can do about it. However, let this be another kind reminder to buy your knives at a dedicated knife store like Knife Depot.
In the case of almost every knife, there is a set of simple guidelines you can follow to gain a generalized understanding of knife laws in the U.S. UU. In general, however, it still boils down to the laws, restrictions and regulations of the jurisdiction in which you find such a knife. After years of experience with many ups and downs, Brian now wants to share everything he has learned during his journey as an avid knife collector, an experienced knife maker and a general knife enthusiast.