The 8 cm Raketen-Vielfachwerfer was a copy of the Soviet BM-8 Katyusha multiple rocket launcher produced in Nazi Germany during the Second World War. The launcher consisted of two rows of parallel perforated steel rails which the rockets were mounted on. The launch rails could launch either German or captured Russian rockets. The rails were then mounted on tubular steel frames on a variety of vehicles. Two of the most common mounts were an armored SOMUA MCG German designation S307(f) half-track modified by Alfred Becker for use by the Wehrmacht or a German Sd.Kfz. 4 half-track. The rocket called the 8 cm Raketen Sprenggranate was a simple cordite fueled, fin stabilized, 78 mm (3.1 in) diameter, high-explosive rocket patterned closely on the Russian M-8. The body was simple and inexpensive to produce due to the use of stamped sheet metal components, unlike the more expensive machined venturis used by spin-stabilized rockets The fins of the 8 cm Raketen Sprenggranate differed from the M-8 and were mounted at 2° to impart spin to improve accuracy. Designer Tolawdjk