An Act amending Title 18 (Crimes and Offenses) of the Pennsylvania Consolidated Statutes, in firearms and other dangerous articles, providing for the offense of undetectable firearms.

HB 1099 would create a new criminal offense under Pennsylvania law for possessing or manufacturing undetectable firearms. These are weapons that cannot be detected by standard metal detectors, such as certain 3D-printed guns. The bill would add this specific prohibition to Pennsylvania's criminal code, making it illegal to have or produce such firearms. It directly affects individuals who possess or create undetectable firearms by establishing clear legal consequences for this activity.