here is the law in IL...
720 ILCS 24-1 Unlawful Use of Weapons
under paragraph (7) (ii) "any rifle having one or more barrels less than 16 inches in length or a shotgun having one or more barrels less than 18 inches in length or any weapon mad from a rifle or shotgun, whether by alteration, modification, or otherwise, if such a weapon as modified has an overall length of less than 26 inches...
My thinking was that an AR/AOW would be allowed since I would use a virgin stripped lower. In effect bypassing the above cited paragraph.
UNTIL, I looked up the definition of "firearm" located in the IL FOID card act. 430 ILCS 65-1/1 firearm defined..."means any device, by whatever name known, which is designed to expel a projectile or projectiles by the action of an explosion, expansion of gas or escape of gas; excluding, however:...it goes on to list paint markers, flares, bb guns, nail guns, and antique firearm (non FA).
SO...I guess the AOW idea is out. IL sucks.