Processing Ballistics Evidence in Connection with Criminal Investigations

The National Integrated Ballistic Information Network (NIBIN) is an essential gun intelligence tool. Operated by ATF, NIBIN enables federal, state, local, Tribal, and territorial investigators to match fired cartridge casings to the guns from which they were fired and link shooting incidents. NIBIN technology has proven its value by generating investigative leads essential to solving gun crimes and reducing violence.

The effectiveness of NIBIN is dependent on the comprehensive collection of fired casings, the prompt test-firing of recovered firearms, and the timely entry of such ballistics evidence into the NIBIN system. To enhance NIBIN's effectiveness, ATF has engaged in extensive outreach and training to federal law enforcement and our state, local, Tribal, and territorial law enforcement partners, and these efforts have resulted in significant progress. Entry of ballistic data into NIBIN has steadily increased, as has the number of investigative leads the system generates.

1.  Requirement to Enter Evidence into NIBIN

All DOJ agents and investigators are required to enter ballistics evidence in accordance with Department guidance and ATF procedures into NIBIN, including all firearms and fired cartridge casings recovered in connection with criminal investigations, including during Department-funded task force operations.

This requirement applies regardless of whether a Department component or a state, local, Tribal, or territorial law enforcement partner takes possession of the firearm or fired cartridge casing. For any agency without a readily accessible NIBIN acquisition site, ATF can assist by providing acquisition services at select ATF Field Divisions, as well as the three national ATF NIBIN lab sites.

To the extent logistical barriers are identified that complicate compliance with this requirement, components should contact the Office of the Deputy Attorney General for assistance.

2.  Timeliness of Evidence Entry

ithout a readily accessible NIBIN acquisition site, ATF can assist by providing acquisition services at select ATF Field Divisions, as well as the three national ATF NIBIN lab sites.

To the extent logistical barriers are identified that complicate compliance with this requirement, components should contact the Office of the Deputy Attorney General for assistance.

2.  Timeliness of Evidence Entry

DOJ agents and investigators must submit ballistics evidence for entry into NIBIN no later than 14 days after a firearm or fired cartridge casing is recovered, absent unexpected and extenuating circumstances.  DOJ agents and investigators should strive to enter ballistics data into NIBIN within 48 hours of recovery.

[Added January 2025]