There is a fee to add/remove a handgun. It's $8. I guess that's to cover the cost of issuing you a new card which lists all the handguns you own make, model, caliber, and serial number. This authorizes you to carry any of those handguns.
Fulton Co. will also let you co register your handguns with your spouse so we both have all our handguns on each other's permits.
The NY system while still an infringement on a right is far better than Nj's paper permit for every purchase.
That was really interesting.
Turing did an amazing job on decrypting the Nazi Enigma machine. The code was too complicated to deterministically crack in a reasonable amount of time, so he came up with non-deterministic logic. This is essentially making the computer guess when it cannot really know. However, it worked often enough to make a difference because applying the guess was easily checked (the problem was in the set NP) and sometimes a message would be decrypted in time for the information contained within to be useful - e.g. rerouting a transatlantic convoy to avoid a U-boat wolfpack.
I don't believe it works that way, which is why this whole build vs buy argument is stupid.
The FFL will transfer it as an "other", nothing signifies if its a comple or incomplete firearm. Its just a check box on form 4473. The NJ system may have a different check box for NJ documentation, but they should know what to do.
There are no transfer forms to your FFL, when they received the weapon they log it into their book by make and model and type, and transfer it accordingly to you.