Mr Fincher's purpose was to challenge the the govm'ts violations of the 2nd Amend directly in a decisive way. Note that he is not a criminal, was not engaged in criminal enterprise and produced the guns with the sole purpose of mounting a challenge to the laws.
Ok. Unfortunately, he'll receive the same treatment as prior challengers have received. USSC hasn't shown much interest in rolling back anti-full auto legislation. Judge Robert Bork says as much in his book "Slouching Towards Gomorrah".