Cannon, 20mm, M61A1 Vulcan


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Inventory Number


Physical Description

Six barrel, electrically operated, automatic gun, 7200 rpm rate of fire; used in aircraft and anti-aircraft applications by all services; missing drive motor and feed mechanism.

Credit Line

Transfer from the U.S. Air Force Amament Museum.

Country of Origin

United States of America


  • Ferrous Alloys
  • Paint
  • Plastics
  • Electronic Components
  • Uncharacterized Plating/Coatings (Including Possible Cadmium Plating)


  • 3-D: 186.7 × 33 × 30.5cm, 127kg (6 ft. 1 1/2 in. × 1 ft. 1 in. × 1 ft., 280lb.)
  • Storage (Aluminum Pallet Storage): 213.4 × 48.3 × 55.9cm, 142.9kg (7 ft. × 1 ft. 7 in. × 1 ft. 10 in., 315lb.)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum