It was one of the most mass-produced artillery systems in the world.
It was created as a replacement for the 122 mm howitzer M-30.
Successfully used for destroying field shelters, elimination of fire points, fighting against artillery and tanks, and laying passages in minefields.
Produced by the USSR from 1963 to 1978. Used by the USSR, the post-Soviet countries, as well as 39 countries of Europe, Asia, Africa, and Latin America.