Purdon's Pennsylvania Statutes and Consolidated Statutes
Title 18 Pa.C.S.A. Crimes and Offenses

[/align]Part II. Definition of Specific Offenses
Article G. Miscellaneous Offenses
Firearms and Other Dangerous Articles
Subchapter A: Uniform Firearms Act
§ 6102. Definitions

"Firearm." Any pistol or revolver with a barrel length less than 15 inches, any shotgun with a barrel length less than 18 inches or any rifle with a barrel length less than 16 inches, or any pistol, revolver, rifle or shotgun with an overall length of less than 26 inches. The barrel length of a firearm shall be determined by measuring from the muzzle of the barrel to the face of the closed action, bolt or cylinder, whichever is applicable. 18 P.S. 6102.


Mauser: House Bill 2563 (Amending Title 34 Section 2525) adopts the Section 6102 definition of "Firearm." So, a 16" bull barrel would be fine. Theabove-referenced code sectionis silent with regard to scopes/accessories, so they are not prohibited - unless that prohibition is referenced somewhere else (that I'm not aware of).