The BM-21 "Grad" (Russian: ??-21 "????", lit.?'hailstorm') is a self-propelled 122 mm multiple rocket launcher designed in the Soviet Union.[8] The system and the M-21OF rocket[9] were first developed in the early 1960s, and saw their first combat use in March 1969 during the Sino-Soviet border conflict.[10] BM stands for boyevaya mashina (Russian: ?????? ?????? – combat vehicle), and the nickname grad means "hail". The complete system with the BM-21 launch vehicle and the M-21OF rocket is designated as the M-21 field-rocket system. The complete system is more commonly known as a Grad multiple rocket launcher system.
Ag1:lamp
Throttle: There are two pistons in the back of the truck to prevent the truck from shaking when firing