Your carbine is a Model 1893 Pieper-Nagant. It was made in Liege, belgium by H. Pieper. Mexico purchased a small quanity of these for their armed forces. It is an interesting gun as it incorporates a gas seal mecahnism to eliminate escaping gases from the cylinder when the gun is fires, also the forearm complete encloses the barrel. The gun fires a special 7 mm cartridge made by DWM in Germany. It is a 9 shot cylinder designed for rapid fire. Pieper also made a companion revolver to this carbine.
