<P> There are no regulating laws for the sale, purchase, or possession of ammunition, however armor - piercing ammunition is illegal in the state . </P> <P> Pennsylvania law requires that information received by the Pennsylvania State Police pursuant to a sale is destroyed within 72 hours of the completion of the background check . The Pennsylvania Firearm Owners Association notes that the Pennsylvania State Police nonetheless keep a "sales database" of all handguns purchased within the state . The database was challenged based on what was asserted as the unambiguous text of the statute, specifically "nothing...shall be construed to allow any government or law enforcement agency or any agent thereof to create, maintain or operate any registry of firearm ownership within this Commonwealth" (full statute text above), the Pennsylvania Supreme Court nonetheless ruled in Allegheny County Sportsmen's League v. Rendell, 860 A. 2d 10 (Pa. 2004), that Pennsylvania's database of handgun sales is not prohibited by state law because the registration was only of handgun sales and not of all guns . </P> <P> Act 192 allowed gun owners and firearm advocacy groups to file suit against local municipalities for their gun control ordinances . Philadelphia, Lancaster, Pittsburgh and five democratic legislators filed suit on the grounds that the act was unconstitutional . The Pennsylvania Supreme Court ruled in favor of the cities and five legislator that the act was unconstitutional on the grounds that bills must pertain to one subject . Act 192 of 2014 was originally intended to criminalize the theft of metals . The firearm part of the act was a provision . </P>

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