Jules Jacquemart Le Monobloc Complete Specs and Full Gun Specifications

Le Monobloc is 25ACP or 6.35mm semi-automatic blowback pistol made by Jules Jacquemart in Liege, Belgium from 1912 to 1914. In 1914 production stopped because first Mr. Jacquemart died and then Germans occupied Liege. The frame, receiver and barrel were a single unit (hence the name), the barrel section being fluted externally in the style of the contemporary Pieper design. Inside the receiver lay a bolt, with grooved finger grips protruding through slots in the receiver sides. The upper portion of the bolt was formed into a tube, through which the recoil spring and its guide rod passed; the tip of the guide-rod screwed into the front of the barrel unit, so the return spring compressed as the bolt recoiled. Pistol is marked: “the MONOBLOC” Pistolet automatique Breveté which is the trade mark by Jacquemart the 20.07.1911.