ITEM NUMBER #187 Good condition Russian mortar grenade 120mm OF-843 with GWMZ fuze. The 120-PM-38 or M1938 was a 120 mm Soviet mortar that was used in large numbers by the Red Army during World War II. Although a conventional design its combination of light weight, mobility, heavy firepower and range saw its features widely copied by successive generations of mortars. All inert free from explosives.