You had a gun that was stolen in burglary and was recovered in Camden NJ How do you go about getting your firearm back?

You did not indicate where you live now, and whether the Camden Police are willing to return for firearm. Since there was no transfer of ownership (theft is not a transfer) it is legal for Camden to ship your gun back to you- US Mail or UPS/Fedex if a long gun, UPS or Fedex if a handgun. They MAY want to send it to a FFL holder in your home state (dealer) and have you pick it up from the dealer. Yes, you would pay for the shipping.

IF the Camden PD does NOT want to return your firearm once it is no longer needed as evidence, you would need to contact the city attorney, requesting return of your property. But start by contacting the Camden PD.