The object of interest is ammunition 120 x 570 mm NATO compatible with the rebuilt in the Bumar-Łabada tanks Leopard 2PL. An crucial request is compatibility with the Ammunition Communication Module (ACM) data link utilized in the upgraded Rh-120 L/44 armat and the existing fire control system. Equally crucial is the ability to usage ballistic data from the SKO without the request for additional modifications in the cannon assembly.