ILLINOIS LAWMAKERS ARE VOTING TO ENACT A BAN ON "GHOST GUNS." 

THE BILL BASICALLY REQUIRES ALL GUNS TO HAVE A SERIAL NUMBER, OUTLAWING SO-CALLED "GHOST GUNS" THAT CAN BE PUT TOGETHER WITH A KIT BOUGHT ONLINE OR USING A 3-D PRINTER. REPRESENTATIVE KAM BUCKNER OF CHICAGO SPONSORED THE MEASURE, SAYING IT DOESN'T TAKE AWAY GUN OWNER'S RIGHTS AND SHOULD STAND UP IN COURT IF CHALLENGED.

GHOST GUNS ARE FIREARMS WITHOUT A SERIAL NUMBER, OFTEN BUILT USING AN ONLINE KIT OR EVEN A 3-D PRINTER. ILLINOIS LAW ENFORCEMENT HAS SEEN A BIG INCREASE IN THESE TYPES OF WEAPONS OVER THE LAST FIVE YEARS. BUT SENATOR NEIL ANDERSON OF MOLINE SAYS HE'S CONCERNED THIS MAY HAVE UNINTENDED CONSEQUENCES FOR LAW ABIDING CITIZENS WHO ENJOY BUILDING THEIR OWN GUN.

SUPPORTERS SAYS MAKING SURE GUNS HAVE A SERIAL NUMBER IS VITAL TO INVESTIGATING VIOLENT CRIMES. THE BILL STILL NEEDS TO BE SIGNED INTO LAW BY THE GOVERNOR.

SUPPORTERS SAYS ILLINOIS LAW ENFORCEMENT HAS SEEN A 400 PERCENT INCREASE IN GHOST GUNS OVER THE LAST FIVE YEARS.