BM-21UM "Berest" - a Ukrainian 122 mm Multiple rocket launcher. The system is based on the KrAZ-5401 cargo chassis and the modernized BM-21 Grad launcher. Instead of 40 missiles in the Grad launcher, Berest launcher has 50 missiles.
The BM-21UM Berest system was presented for the first time at the Weapons and Security 2018 exhibition, which took place on October 9–12 in Kyiv. "Berest" is a deep modernization of BM-21 Grad, and is designed to replace it.[1][2]
