N.J. Stat. Ann. § 23:4-34

Notice of the seizure of all guns, made for violation of section 23:4-31 of this title, shall be sent to the board, at Trenton, by the officer making the seizure, immediately after the rendition of judgment in the prosecution brought for violation thereof. The gun so seized shall be sold, at the discretion of the board, and the proceeds of the sale shall be paid to the board for its use.