Notes: The K-242A1 is a carrier for a heavy mortar based on the KIFV chassis. In this version, the passenger compartment is taken up by ammunition and an M-30 4.2" mortar, and the turret is deleted. There is a large, three-part hatch over the mortar compartment, similar to that on the US M-106A2. The firing ports are retained, and the vehicle has a machinegun mount for local and antiaircraft protection. A bipod, bridge, and baseplate are carried to allow the mortar to be deployed away from the vehicle.

The K-281A1 is a variant of the KIFV, carrying an 81mm mortar in the back along with ammunition. A bipod and baseplate is carried to allow the mortar to be operated away from the vehicle. The turret is deleted, but the firing ports are retained. There is a large, three-part hatch over the rear compartment to allow the mortar to be fired. This vehicle is similar to the K-242A1, but uses an 81mm mortar, and is rather less common than that vehicle.