I digress. Don't tell authorities in NY if you have guns brought from another state.
It really was horrible when my father died and within 3 days there's NY state demanding his handguns, antique and all from my mother. She cried so hard.
This is the same state that didn’t prosecute their governor for procuring prostitutes with bundled payments to avoid financial reporting requirements. Some of those crimes were federal, but he definitely broke some state laws and he didn’t volunteer the information. How many arrests do you see at gun buy backs?
Just because he died doesn't mean they inherit. Their law may say the guns may not be transferred to another New Yorker, but they have no authority to prevent you from moving them out of state. That would be none of their business, legally or in reason, and for them to imply otherwise is beyond criminal.