Source: WarLeaks - Military Blog
The K136 Kooryong is a South Korean rocket artillery system that was deployed in 1986. The multiple rocket launcher has 36 tubes and fires 130mm (K30, 131mm (K33) rockets. Payload is conventional High explosive and pre-fragmented HE, containing 16 000 steel balls at a range of 22 or 30 km. Launcher is carried on a KM809A1 6x6 truck. About 150 units were built.
