The T-72B3 is a recent Russian upgrade of the ageing T-72B tanks. It can be seen as a low-cost alternative to the T-72B2 Rogatka upgrade to keep older T-72B tanks operational. Refurbished and upgraded T-72B3 tanks are fitted with new engine, new gunners sight, new fire control system and have some other improvements. Now this MBT has a limited hunter-killer engagement capability. First upgraded T-72B3 tanks were delivered to the Russian Army in 2013. By 2020 a total of 558 tanks were upgraded to the T-72B3 standard.