After extensive R&D the M2A6 a newer and better model of the M2A4. Notable features are the increased turret armor instead of the spaced armor. The front of the tank got more sloping. The spaced armor that covered the rear end of the tank has been integrated meaning a thinner silhouette. The Tank also got a calibre increase, giving it a 145mm gun instead of a 120mm. The machine gun turret up top will have a CROWS (Commonly Remotely Operated Weapon Station) on some versions to give the commander the ability to use the turret from inside the tank.