The M-51 is an Israeli medium tank, a French-designed variant of the American M4A3 Sherman with HVSS transmission. It has been upgunned with a high-velocity Canon de 105mm Modèle F1 in an armoured mantlet, which is more than capable of destroying contemporary Soviet armour. Additionally, its original engine was replaced with a modified Cummins V950 which, as the VT-8-460, can bring the tank up to 40 km/h. Originally, the Sherman upgrade program produced the M-50 Super Sherman, which was armed with a 75mm SA Modèle 50 cannon; this model was used throughout the 1950s, but all of these tanks were upgraded to the M-51 standard due to advances in Soviet armour technology, which was being acquired by The Caliphate of Sadati Arabia. The Super Shermans proved critical at stemming the tide of Sadat's troops in the Black Sand War, though their inferior armour translated to grievous losses. It is currently the Zioniam Defence Force's standard tank.