David Olofson was an Army reservist, an average citizen, and a gun-owner. David owned an AR-15 rifle, which is basically a replica of the M-16 military rifle, but without some of the military specs. It's a great gun to shoot, as I've used them on multiple occasions (both the M-16 and AR-15!) David loaned his gun to a friend, who brought it to a local rifle range. The gun fired several short bursts of multiple rounds, then jammed. Obviously this was a malfunction of the weapon, as an AR-15 is not designed for multiple shots. However, someone near the range called the police and reported machine-gun fire. The ATF got involved and found that the weapon was NOT modified by Olofson or his friend. Obviously the ATF and the prosecutor felt that they could not charge him with the modification of the weapon as there were none, so instead they charged him with the illegal transfer of a machine gun. Considering there was no transfer, other than a loan, I'm not sure exactly how that even flew, but the prosecutor brought the case and he was convicted. Now David Olofson sits in a federal penitentiary awaiting an appeal.