Greg is on the right track. I would strongly suggest that you consider having them transferred from an FFL dealer in PA to one in NY unless the County permit department tells you otherwise. If you bring them into NY prior to obtaining a permit you are legally unlicensed and therefore in violation of law. So, like if you had a car accident and they were in the car or, god forbid if they were taken, or any other interaction with a LE official in NY, you have a real problem. Like others have said I would call the County Clerks Office and pose the scenario to them. I would bet they have been through this before. In the interim or until you are settled and established in NY, keep them in a legal safe place in PA like with a licensed FFL dealer. Good luck, Peter.