I'm a little disturbed that nobody is pissed that the paper FA10 system has gone away.
If we're required to use computers to sell a gun, then only people who have access to, and are comfortable using, a computer can sell or a buy a gun privately.
Not only that, what happens when the state's computer that handles the instant checks stops working? It could "stop working" because the state takes it down for maintenance, it has a hardware failure, it is accidentally (or deliberately) neglected, the state's service provider screws up and it's not accessible, etc. The state can't even manage copyright on their own forms, I certainly don't believe that they'll put extra effort into maintaining a website.
When that happens, FTF transfers are de-facto illegal.