Gimme a break.
Here are Chicago gun ordinances.
Municipal Code of Chicago - Weapons
You may register any gun except handguns, assault rifles (listed), short barreled rifles, silenced weapons, full auto weapons.
There is nothing in there about keeping guns broken down, or even unloaded, in your home.
There is a section specifically allowing you to carry your weapons in vehicle for use in lawful purposes both within and without the City of Chicago, and in this case they must be "broken down" to non-functional status while in the city.
Chicago is bad, no doubt about it.
You can't even possess ammunition for a firearm you don't own and have registered as I read it, there's some kind of laser sight limitation, etc.
But you don't need to make stuff up to make it seem even worse than it is.
- OS