The Illinois Supreme Court heard arguments this week in a case challenging Cook County's ban on assault weapons.
Three gun owners say they're law-abiding citizens and only use their firearms for recreation and self-defense.
Edward Ronkowski represents the men. He told the justices the law was too broad, and gave an example of someone buying a rifle. The owner could make sure he was in compliance with the ordinance by verifying the gun would accept only a four-round clip.