This an original 37 mm gun that was set up with a propane firing system for re-enactments or shows. It tows behind a Jeep or truck without problems. No rust or damage.
The 37 mm Gun M3 was the first dedicated anti-tank gun fielded by United States forces in numbers. Introduced in 1940, it became the standard anti-tank gun of the U.S. infantry with its size enabling it to be pulled by a jeep.