Instructions
Check the laws. This point simply cannot be stressed enough. Before you begin looking at where to buy a switchblade knife, check the statutes for both your state and municipality.
Browse local sporting-goods and hunting-supply stores. If switchblades are legal in your area, a good bet for finding one locally may be a store that sells a selection of quality knives. If the stores do not carry them, they may be able to direct you to a vendor that does.
Check online auction sites. If you cannot find a switchblade locally, an online auction site might be the best place to find one at a reasonable price. Sites based in other countries may be a good source. For instance, switchblades are still popular in Italy, so a site based there may carry them. The shipping fees may be a bit pricey but still might be cheaper than trying to buy a switchblade domestically.
Order a catalog from knife wholesalers. Some companies act as wholesalers for various knife manufacturers, and they often supply free catalogs. Such companies may have switchblades available.
Buy a switchblade-knife kit. In most states it is legal to sell or own the components of a switchblade knife, even if the finished product is prohibited. So, in many cases, it is possible to get a do-it-yourself switchblade kit.