Here are some relevant sections of NJ gun laws....
I have heard that if you move to this state or inherit guns, you are required to fill out a form with the State Police listing the guns you bring in. I would be interested if anyone has the straight skinny on that one.
(1) A Permit to Purchase or FID shall not be required for the passing of a firearm upon the owner's death to his heir or legatee. Unqualified recipients must dispose of the firearms within 180 days
(2) It is unlawful to sell, give, transfer, assign, or otherwise dispose of or receive, purchase, or otherwise acquire a rifle or shotgun, other than an antique rifle or shotgun, unless the purchaser assignee, donee, receiver, or holder is licensed as a dealer under New Jersey law or possesses a valid FID, and first exhibits the FID to the seller, donor, transferrer, or assignor, and the purchaser assignee, donee, receiver, or holder signs a written certification on a form prescribed by the Superintendent of State Police, which identifies the purchaser, his address and FID or dealer's number, and states he presently is not disqualified from purchase.
Regardless what is said by NJ law, it is illegal to purchase a handgun in the state without the proper forms being kept by the FFL dealer and copies sent to the state. Even long guns are called in to the State Police and records kept by the dealer. I fail to see how that differs from registration. Any gun I buy out of state has to be transferred in to a Jersey FFL.
In 1968 I bought a .357 hogleg in a general store in New Mexico legally over the table with nothing but money passing hands. That's what I call un-registered. Everything they do today is registration.
How can they know if a gun is illegal if you say it was inherited from your Grandfather and you don't know where he got it.