after its introduction in 1962, the M51 proceeded produce the core of Israeli Defense Forces armored services and products, succeeding the M1 and M50. Many M51s utilized the cast hull M4A1 Sherman as a base, creating a lengthy caliber 105mm gun in a cast turret that is extended rearwards allowing for the gun. Operating on a 460hp diesel and utilizing horizontal volute springtime suspension system system (HVSS) with wide tracks, it may provide exemplary freedom. The Six Day War of 1967 saw the M51's combat first.