The 2A65 "Msta-B" (named from the Msta River) is a Soviet towed 152.4 mm howitzer. The "B" in the designation is an abbreviation for Buksiruyemaya, which means towed. This weapon has been fielded in Soviet forces since at least 1987 and as of 2022 is currently in service with Russian front and army level artillery units, as well as the militaries of six other countries, most of them former Soviet republics. The 2A65 howitzer is capable of firing nuclear artillery shells.