I currently reside in PA however my girlfriend lives in/resident of NJ. Over the past several months, I've been spending 4-6 days a week at her house. At my home in PA, I have a collection handguns & long guns. I was wondering what the laws are & if it would be legal for me to bring an firearm/ammo to her house when I stay over for home defense? I would transport the firearm unloaded, locked in a GunVault safe in my trunk.

If this is illegal, would I be able to transfer a firearm to her or have her purchase one in NJ and keep it inside of her home