ATCM "Storm-S" of the Ukrainian army
"It is worth noting that the USSR created the 9P139" Grad-1 "jet system (on a tracked chassis), - writes Messenger of Mordovia. - Unlike the usual BM-21, it was a light version of the system. For example, instead of 40 there were 36 guides. These MLRS were released in small quantities, and even for some time were in service. "
After 40 years, something like this was decided to make in Ukraine.
Military remake "Sturm-S" in "Grad"
Soviet tracked variant "Grad-1"