How does the study of firearms help in CSI?

How does the study of firearms help in CSI?

Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: How does the study of firearms help in CSI?; How does a gun work?; How are firearms and ammunition collected in CSI? and more...

There are a variety of things that a firearms investigator looks for. He or she will look for, for example, markings on bullets, or the markings on cartridge cases. Also what will be examined perhaps will be residues, or powder residues that are left on a target that has been hit by a bullet, or residues that collect on the hands of a firer, or perhaps a serial number that has been sawed or erased off from a weapon, and hopefully can be restored. So these are all kind of typical examples of the work that a firearms examiner carry out on a daily basis.