Last week, a downstate federal judge ruled that the ban is unconstitutional.
Now the state is asking for a stay of that decision, pending their appeal.
READ MORE | Federal judge strikes down Illinois assault weapons ban; state files appeal
Illinois Attorney General Kwame Raoul writing in that motion, that the court's decision is "badly flawed."
Raoul went on to say that if the ruling is allowed to take effect, it will "work serious and lasting damage to public safety within Illinois."