MOSCOW, April 15. /TASS/. An experimental batch of Armata (T-14) tanks is undergoing troop tests - the last stage before they are put into service and serial delivery starts, deputy chief of Russian machine building company Uralvagonzavod Alexey Zharich told the Izvestia daily.

"Tests of Armata are proceeding according to schedule, there are no problems," Zharich said, adding that serial deliveries "may start at any moment as soon as the client wants them to."

Currently the troops have some 20 T-14 tanks, he said.