The turret-less vehicle has an open area in the centre for the gun and crew but retains the driver's position and includes a horizontal metal shield for overhead protection.
To withstand higher firing stresses and to cater for longer recoil the Vijayanta tank's hull has been elongated with seven bogie wheel stations on either side. The stability to the vehicle during firing is provided by unique hydraulic suspension locking system. The self-propelled medium artillery gun can fire both HE and AP ammunition and has a maximum range of 27km. The gun has a limited static traverse 12½% on either side and an elevation of +45% to -2%. The system can stow 30 rounds of separate loading ammunition. A total of 100 M-46 Catapult systems were built and are now being phased out from active service may be replaced by an unspecified number and type of 155mm self-propelled howitzers.