Negative.You can have a short barrel rifle if you get a C & R license in Illinois.
How many years does it take to be considered a relic?
The ATF classifies a firearm a curio or relic if it falls into one of three categories: the gun is at least 50 years old, it is “certified by the curator of a municipal, State, or Federal museum which exhibits firearms to be curios or relics of museum interest,” or it “derives a substantial part of [its] monetary value