New York State Police


Forensic scientist examining weapon.

Top: Forensic scientist uses a comparision microscope look at ballistic striations, searching for class and/or individual characteristics. Bottom: Forensic scientist test fires a weapon for operability.

The Firearms Unit is responsible for identifying, examining and analyzing guns and related expended ammunition components.

Firearms examiners perform all operability testing, microscopic comparison of fired evidence, Gun Shot Residue (GSR) range determinations, General Rifling Characteristics (GRC) determinations, Caliber determinations, and serial number restorations, in criminal cases.

National Integrated Ballistics Information Network (NIBIN)

Staff uses specialized microscopes and computers to capture digital images of firing pin impressions and breach-face marks on expended cartridge casings as part of NIBIN

NIBIN is a computer network maintained by the Federal Bureau of Alcohol, Tobacco, Firearms and Explosives that enables partner crime laboratories to search ballistic databases nationally for links to other crime scene cartridge casings and test-fired crime weapons.

Destruction of Weapons

By law, the Superintendent of State Police is authorized to destroy "nuisance" weapons-guns or firearms-which are unwanted, surrendered or which have been used in the commission of a crime.