An Act amending Titles 18 (Crimes and Offenses) and 53 (Municipalities Generally) of the Pennsylvania Consolidated Statutes, in firearms and other dangerous articles, further providing for limitation on the regulation of firearms and ammunition; and, in preemptions, providing for regulation of firearms and ammunition.

HB 548 strengthens Pennsylvania's state preemption of local firearm regulations by declaring that all aspects of firearm regulation - including purchase, sale, possession, and transportation - must follow state law, invalidating any conflicting local ordinances. It directly affects counties, municipalities, and townships that previously enacted stricter gun rules, as well as residents, gun dealers, or organizations challenging such local laws. Key provisions include creating legal remedies for those harmed by illegal local regulations (allowing lawsuits for damages, attorney fees, and injunctions) and explicitly stating that state law supersedes all local efforts. The bill takes effect in 90 days for its core preemption rules, requiring local governments to align with state firearm laws immediately.