28 C.F.R. § 25.4 Record source categories.
Title 28 - Judicial Administration
It is anticipated that most records in the NICS Index will be obtained from Federal agencies. It is also anticipated that a limited number of authorized state and local law enforcement agencies will voluntarily contribute records to the NICS Index. Information in the NCIC and III systems that will be searched during a background check has been or will be contributed voluntarily by Federal, state, local, and international criminal justice agencies.
Title 28: Judicial Administration
PART 25—DEPARTMENT OF JUSTICE INFORMATION SYSTEMS
Subpart A—The National Instant Criminal Background Check System
§ 25.4 Record source categories.
