T-64B1

T-64B1 (Object 437A)

It was produced in parallel with the T-64B until 1985. The main difference is the absence of the 9K112 guided weapons unit, but retained the 1A33 fire control system and the ability to install a KUV. (too expensive system for mass production at that time) T-64B1 is almost identical to the T-64B tank.
During the Soviet era, the T-64 main battle tanks were used only by the Soviet Army and were never exported. After the collapse of the USSR, they remained in Russia, Uzbekistan, Kazakhstan, Ukraine and Transnistria