the federal definition of a a semi auto and its code

18 USCS § 921(28)- The term "semiautomatic rifle" means any repeating rifle which utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round, and which requires a separate pull of the trigger to fire each cartridge.


SO< again a modified AR that does NOT fit this, is NOT legally classified as a semi auto rifle!