Manufactured using a South African-made Vector Arms UZI as the base, the HR 4332 was part of the final generation of fully transferable American machine guns, manufactured shortly before the Firearm Owners Protection Act (aka House Resolution 4332) went into effect making it among the last fully transferable machine guns manufactured in the United States. The receiver is devoid of the barrel ring and bolt block that would normally prevent installation of military configuration components, and the item is currently fitted with a military-contour SMG barrel, a smooth-sided bolt, an unmarked receiver cover with ratcheting cocking handle, and a full auto trigger group with "A R S" markings. The grips are ribbed, and it has fixed stock. Absent magazine. Includes two extra springs, three extra guide rods with springs, a canvas sling, an Uzi manual and a .22 LR conversion kit consisting of a rimfire lightweight aluminum bolt and 10 1/2 inch .22 LR barrel (no magazine).