If you believe your firearms purchase or transfer was denied in error, download and complete the Pennsylvania Instant Check System challenge form. Unlawful posession or concealment of a firearm in PA can mean serious penalties.Don't take risks with your rights. Certain weapons are not permitted to be possessed in Pennsylvania. If you possess a listed weapon you may be charged with a misdemeanor of the 1stdegree. Pennsylvania's gun laws are among the strictest in the country and failing to comply with these laws can result in serious criminal charges. If you answer questions incorrectly on either the ATF Form 4473 or SP4-113 forms, the Pennsylvania State Police will be asked to "investigate" the matter. Persons Prohibited From Possessing, Owning, Selling, Or Transferring Firearms. Section 6105 of the Uniform Firearms Act, or for an offense under the Controlled Substance, Drug, Device and Cosmetic. Act. 6. A Sportsman's Firearm Permit does not authorize carrying a loaded handgun in a vehicle.