The RPG-43 was a high-explosive anti-tank (HEAT) shaped charge hand grenade used by the Soviet Union during World War II. It entered service in 1943, replacing the RPG-40; the RPG-40 used a simpler high explosive (HE) warhead. The RPG-43 had a penetration of around 75 millimetres (3.0 in) of rolled homogeneous armour at a 90° angle. Later in the war, it was improved and became the RPG-6.