18 Pa.C.S. § 6127: Firearm tracing.

(a) Illegal possession.--Upon confiscating or recovering a firearm from the possession of anyone who is not permitted by Federal or State law to possess a firearm, a local law enforcement agency shall use the best available information, including a firearms trace where necessary, to determine how and from where the person gained possession of the firearm.

(b) Tracing.--Local law enforcement shall use the National Tracing Center of the Federal Bureau of Alcohol, Tobacco, Firearms and Explosives in complying with subsection (a).

(c) Notification.--Local law enforcement agencies shall advise the Pennsylvania State Police of all firearms that are recovered in accordance with this section.