(720 ILCS 5/24‑2.1) (from Ch. 38, par. 24‑2.1)
Sec. 24‑2.1. Unlawful use of firearm projectiles.
(a) A person commits the offense of unlawful use of firearm projectiles when he or she knowingly manufactures, sells, purchases, possesses, or carries any armor piercing bullet, dragon's breath shotgun shell, bolo shell, or flechette shell.
For the purposes of this Section:
"Armor piercing bullet" means any handgun bullet or handgun ammunition with projectiles or projectile cores constructed entirely (excluding the presence of traces of other substances) from tungsten alloys, steel, iron, brass, bronze, beryllium copper or depleted uranium, or fully jacketed bullets larger than 22 caliber designed and intended for use in a handgun and whose jacket has a weight of more than 25% of the total weight of the projectile, and excluding those handgun projectiles whose cores are composed of soft materials such as lead or lead alloys, zinc or zinc alloys, frangible projectiles designed primarily for sporting purposes, and any other projectiles or projectile cores that the U. S. Secretary of the Treasury finds to be primarily intended to be used for sporting purposes or industrial purposes or that otherwise does not constitute "armor piercing ammunition" as that term is defined by federal law.