Possession and carry of switchblades is legal, but regulated, in various states. 18 states permit carry of switchblade. Most of them don't permit concealed carry so know what your state regulations are. 26 states permit possession of switchblades. IOW, you can collect and show them, just not carry them unless you also live in a state that permits carry. Know what your state regulations are. There are several switchblade law sites, but this is my favorite - http://pweb.netcom.com/~brlevine/sta-law.htm Interstate sale of switchblades is regulated and restricted to "bona fide" dealers who sell to authorized agents of the government. It doesn't matter that you see them at gun shows and in the mall, the interstate commerce law (18 USC 1716) limits interstate commerce to LE and Military. The law applies to the seller and not the purchaser. Assisted openers and one hand openers are not switchblades. We hope this helps reduce some of the oft repeated myths and misinformation about switchblades.