Laws vary from State to state and even city to city. The best thing to do is simply contact your local police department to see what their take is on the laws where you live. I have purchased several knives online with no problems at all.
Here is advice on buying a switchblade from other WikiAnswers Contributors:
Chat with our AI personalities
Thailand. I bought one there and got it back through customs without a problem.
For those of you who are not planning a trip to Thailand, you can order them online. Make sure to check your local ordinances so you know what's allowed in your state. many states allow them, some allow you to own but not carry, and a few still consider them illegal completely.
type "switchblade knife" in search engine and you will see plenty of places to buy.
Switchblade knives can be bought in hunting stores. They can also be bought online, and at general stores, as long as a person has a proper ID.
In the us u can get them in
AL, AZ, AR, CA, CT, FL, GA, ID, IO, KY, MI, NE, NV, NH, NY, NC, ND, OH, OK, OR, RI, SC, SD, UT, VA, WY .
In many states and cities they are illegal, considered a deadly weapon or a concealed weapon.