The M-84AS1 and M-84AS2 are substantially modernized versions of the M-84AS main battle tank designed by the Military Technical Institute and produced by Technical Overhauling Institute "Čačak" in Serbia. The first version designated as M-84AS1 was presented in 2017. Later revisions feature numerous improvements and were presented in 2020 and 2021.
Latest revisions of the AS1 and AS2 incorporate newly domestically developed modular explosive reactive armour, a modern battlefield management and fire-control system, a remote controlled weapon station and other updates. A total of twenty-one subsystems are updated with modern solutions. AS1 and AS2 are developed in parallel and differ in the number of implemented subsystems and some specific turret modification regarding RCWS, the commander hatch and equipment implementation. AS2 is probably going to be used as a platoon commander tank as soon as mass modernization begins.
