Chester James Doles, 43, Dahlonega was arrested in March 2003 when federal agents raided his home and found a dozen guns. An informant had been recording conversations with Doles since July 2001.
Federal agents say Doles served as state leader for the National Alliance.
The U-S attorney's office says Doles had been holding monthly meetings of extremists on his property before his arrest.
U-S District Judge Richard Story sentenced Doles to five years and ten months in federal prison. Doles will also be supervised for three years after his release.