Unsure about this one.
To provide for the reporting to State and local law enforcement authorities of cases in which the national instant criminal background check system indicates that a firearm has been sought to be acquired by a prohibited person, so that authorities may pursue criminal charges under State law, and to ensure that the Department of Justice reports to Congress on prosecutions secured against prohibited persons who attempt to acquire a firearm.
So what if the NICS system is wrong and denies you?
Will the Local LE or FBI be storming your door?
Will you be forced to prove your innocence in court at your cost?