Top democratic leaders, including Gov. Pat Quinn, are urging lawmakers to ban high-capacity ammunition magazines.
Quinn, Senate President John Cullerton and State Sen. Dan Kotowski spoke Sunday at a news conference in Chicago with parents of children killed last December in a Connecticut school shooting.
Kotowski introduced legislation late last week that would ban the sale, delivery and possession of magazines that accept more than 10 rounds.
He and the others urged lawmakers to take it up before adjourning on May 31.
Quinn wants an assault weapons ban and tried unsuccessfully to push for one in the past.
The push comes as lawmakers face a June 9 deadline imposed by a federal appeals court to legalize concealed carry.