CHAPTER 9. WEAPONS
PART I. MACHINE GUNS
§1751. Definitions
For purposes of this Part, "machine gun" means any weapon which shoots, is designed to shoot, or can be readily restored to shoot automatically more than one shot without manual reloading by a single function of the trigger. The term shall also include the frame or receiver of any such weapon, and any part designed and intended solely and exclusively, or combination of parts designed and intended, for use in converting a weapon into a machine gun. The term shall not include items that are not required to be registered in the National Firearms Registration and Transfer Record maintained by the Bureau of Alcohol, Tobacco, Firearms and Explosives.