Can you provide a cite for that?
Yep. The Illinois State Police website.
All cities, towns, villages, etc. are required by IL law to provide the ISP with their Firearms Laws and they are then posted for public viewing.
I found it when I was trying to find out info for the delay in getting my IL FOID card renewed. When I saw Chicago's posted I started reading, and reading and reading.
One of Chicago's laws made me chuckle - in disgust. Cap Pistols are required to be registered with the Chicago Police Department and the registration renewed annually - at the whim of the Superintendent of the CPD.
Accordingly, my old Nichols Stallion .45, which I still have, and my Mattel Fanner 50 are dangerous weapons as far as Daley is concerned.
NOTE: The laws are all in adobe .pdf, so be careful if your pc locks up. It might be better to save to your HD and read later.