Royalty Free Photography

One of the two 40mm Bofors cannon in an AC-130 Spectre gunship. The AC-130 mounts 6 powerful guns on the left side of the aircraft for side firing in ground support and interdiction missions. This configuration was used during the Viet Nam war.
This AC-130 is on display at the US Air Force Armaments Museum in Shalimar, Florida.
Shot with a Nikon D-80 and a 50mm AIS lens.