The ROKS-2 and ROKS-3 were man-portable flamethrowers used by the USSR in the Second World War. The ROKS-2 was designed not to draw attention, so the fuel and gas tanks were concealed under a sheet-metal outer casting resembling a knapsack; the flame projector was designed to resemble a standard Mosin–Nagant rifle. The purpose of this was to prevent the operator from being specifically targeted by the enemy. The flame shots were ignited by firing specially modified 7.62×25mm Tokarev cartridges. The ROKS-2 was used, amongst other engagements, during the close-range fighting during the first days of the Battle of Kursk in 1943. The ROKS-3 was a simplified model designed to be easier to manufacture. It did away with the disguise for the backpack, though it retained the flame projector designed to resemble a rifle. Both models carried around of fuel. The fuel was propelled by nitrogen gas pressurized at and, under ideal circumstances, had a maximum range of around . The Finnish designation for captured ROKS-2 units was liekinheitin M/41-r. Captured Soviet flamethrowers saw some use by Finnish forces during the Continuation War. They were operated by two-man teams of combat engineers. They were well regarded by the Finns, although flamethrowers of all kinds saw little use by Finnish forces. Some ROKS-3 units were supplied to North Korea, Egypt, and Syria. See also List of flamethrowers List of Russian weaponry References External links Information on the ROKS flamethrowers Pictures of a ROKS-3 Flamethrowers of the Soviet Union World War II infantry weapons of the Soviet Union Military equipment introduced in the 1930s