Okay, are you hunting the parks or something? Because 5b (Lancaster county) isn't shotgun, ML restricted. Only in the 6 parks that are open for hunting are there restrictions. All other spots in Lancaster county are open for CF rifle. Or are you heading over to 5c or 5d? (special regs areas).

As far as your question, they have 12 gauge rifled slug barrels for that model shotgun. They are much better and more accurate than smooth bore options like a rifled choke.