https://www.ammoland.com/2017/08/illinois-reform-of-switchblade-ban-signed-into-law/#axzz4qtctEbM7
(2) The provision of paragraph (1) of subsection (a) of this Section prohibiting the sale, manufacture, purchase, possession, or carrying of any knife, commonly referred to as a switchblade knife, which has a blade that opens automatically by hand pressure applied to a button, spring or other device in the handle of the knife, does not apply to a person who possesses a currently valid Firearm Owner's Identification Card previously issued in his or her name by the Department of State Police or to a person or an entity engaged in the business of selling or manufacturing switchblade knives.
