Anywhere other than Chicago/highland Park/Aurora areas, it should be just fine.

Legal except in cook county Chicago/highland Park/Aurora areas,

Sean, this depends where you live Sir. The entire state does not restrict the sale or possession of firearms that have been defined as assault weapons, or of magazines that can hold more than a certain number of rounds of ammunition, but some local jurisdictions do restrict them. The restricted areas Zip Codes are here : budsgunshop.com/catalog/feeds/state_reg/illinois_restrictions.pdf