MGK "Bur" (Rus. Малогабаритный Гранатомётный Комплекс "Бур" / "Malogabaritnyy Granatomotnyy Kompleks "Bur"" — Compact Grenade-launching System "Auger") is a 62 mm version of the RPO-M consisting of two major components: the disposable launch tube and reusable fire control unit. Described as "the most compact grenade launcher in the world," the weapon has an overall length of 742 mm and weighs . Loaded tubes weigh and can fire thermobaric (blast yield similar to of TNT, or a 122 mm artillery rocket) or fragmentation warheads. The fire control unit is the same one used on the RPO-M, weighing and enabling ranges of 25–650 m with the baseline day sight; night and thermal systems are also available. Maximum range is 950 meters, with a firing mechanism service life of at least 500 rounds. It can be fired in confined spaces with a volume of at least 30 cubic meters. As of October 2014, it has been accepted into service and serial production has been started.