The comprehensive statistical and digital analysis system for firearms evidence is known as the **National Integrated Ballistic Information Network (NIBIN)**. NIBIN is a national database in the United States managed by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) that integrates digital images of ballistic evidence from crime scenes. It includes images of fired bullets and cartridge casings, capturing markings such as breech face impressions, firing pin impressions, and ejector marks. When a firearm is used in a crime and the bullet or casing is recovered, its image can be entered into NIBIN. The system then searches for potential matches against evidence from other crimes. This allows investigators to link shootings across different jurisdictions and identify potential serial offenders. NIBIN was created by merging two earlier systems: the FBI's DRUGFIRE (focused on cartridge cases) and the ATF's Integrated Ballistics Identification System (IBIS, focused on bullets). It is a critical tool for modern ballistic intelligence and crime gun tracing.

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