Russian military equipment in 2015, BM 21 Grad. BM-21 Grad (9K51) - multiple launch rocket system. Became an important stage in the development of rocket artillery, MLRS BM-21 "Grad" was developed on its own initiative in the Tula NII-147, created in July 1945 to meet the challenges of technological support mass production of conventional artillery shells shots. Developed by NII-147 technology for manufacturing sleeves by deep drawing and production provided a thick and durable shells, which are combustion engines rockets. Therefore, designers NII-147 have the opportunity to move from solving a particular problem - technological support the production of ammunition - to the more difficult and complex - the development of multiple launch rocket systems. JOIN VSP GROUP PARTNER PROGRAM: https://youpartnerwsp.com/ru/join?82735