The Kaiser-Fleetwings A-39 was a project by Kaiser-Fleetwings in the 1942–1943 period for an attack aircraft powered by a single Pratt & Whitney R-2800 radial engine.
It was to be armed with four .50 caliber machine guns and two 37 mm cannons, along with up to 3,000 pounds (1,400 kg) of bombs.
[1] The A-39 was canceled before any prototypes were built.
[1] Data from Johnson 2012[1]General characteristics Armament
Aircraft of comparable role, configuration, and era