The BM-21 Grad is a Russian truck-mounted 122 mm multiple rocket launcher, developed in the early 1960s. Several other countries have copied it or developed similar systems. The BM-21 122 mm multiple rocket launcher (MRL) system entered service with the Soviet Army in 1963 to replace the aging 140 mm BM-14 system. It consists of a Ural-375D 6X6 truck chassis fitted with a bank of 40 launch tubes arranged in a rectangular shape that can be turned away from the unprotected cab.In 1976, the BM-21 was mounted on the newer Ural-4320 six-by-six army truck. More Features: -Detailed multi-directional slide-molded cab. -Full drive train assembly complete with engine transmission, differential housing and suspension units. -The main tires are hollow rubber with very good tread pattern -Wheel hubs are in great details with separate hub rings. -The windshield and side windows are made of clear prts. -Photo-etched parts included Sehr detaillierte Bauanleitung in Farbe.