According to PA laws regarding transfer of weapons:
Any individual or dealer selling a handgun is required to sell or transfer it at the place of business of a licensed dealer or county sheriff’s office.
Transfers of all firearms (handguns, rifles and shotguns) by a licensed dealer are subject to an instant records check of the purchaser.
The purchaser must sign a transfer application/record of sale for the purchase of a handgun.
So, depending on how much gun trading or bequeathing you intend to do, there are some quirks in PA law to pay attention to. Don't know how closely the state applies those statutes. Perhaps JdeP can shed some light.