CHICAGO (CBS) — Chicago’s top cop says tougher gun laws would save lives in Chicago, including those of gang bangers.

Standing before some of the more than 4,000 guns seized by Chicago Police this year, Superintendent Garry McCarthy outlined four cases where men picked up for unlawful use of a weapon later became victims.

“A 21-year-old man was shot on July 23, was convicted of aggravated UUW in September of 2012. He was given six months of probation,” said McCarthy.

McCarthy says too many illegal guns and not enough truth in sentencing means more violence in Chicago so he wants state lawmakers to pass tougher laws.

Meanwhile, the Superintendent says there have been 80 fewer murders and 400 fewer shooting victims compared to this point last year.