The service revolver model 1873 Chamelot-Delvigne was the first double-action revolver used by the French Army. It was produced by Manufacture d'armes de Saint-Étienne from 1873 to 1887 in about 337,000 copies. Although replaced by the Modele 1892 revolver, it was nevertheless widely used during the First World War and issued to reserve units in 1940. The French Resistance made widespread use of it during the German occupation. 11 mm Mle 1873, 12 mm Lefaucheux