The Projector, Infantry, Anti-Tank or PIAT was Britain’s primary infantry anti-tank weapon during the latter half of the Second World War. Firing a 2.5lbs bomb containing a shaped charge warhead capable of penetrating armour up to 4 inches thick. During the Second World War, it equipped British and Commonwealth troops as well as arming resistance and partisan fighters behind enemy lines in Nazi-occupied Europe. Based on a spigot mortar system of operation it was largely obsolete with the refinement of rocket launched and recoilless rifle systems. Despite increasing obsolescence, it continued to see use after the war. In this article, we will examine its use by the Israeli Haganah during the 1947–49 Arab-Israeli conflict.