--The Skyhawk single-seat final model [A-4M] is an aircraft developed for the US Marine Corps.
--When the deployment of the A-7 Corsair II to the US Navy began and the leading role of the carrier-capable attack aircraft was changed from A-4 to A-7, the US Marine Corps landed the A-4M instead of the A-7. Adopted as an attack aircraft.
--For the M type, the engine was replaced with the J52-P-408A, and the intake was also enlarged accordingly.
--The outline of the vertical stabilizer has also been changed to a square shape. A large type of windshield is also installed.
--The electronic equipment has also been significantly redesigned, including the fin tip radome on the vertical stabilizer, the LST on the nose, and the ALR-54 / ALQ-126 on the nose and tail.