This is a Second Model carbine as manufactured by the Massachusetts Arms Company of Chicopee Falls Mass. Made between 1860 and 1865. The left side of the receiver is marked "EDWARD MAYNARD / PATENTEE / MAY 27. 1851. / DEC. 6. 1859." The right side is marked "MANUFACTURED BY / MASS. ARMS CO. / CHICOPEE FALLS." There is a "G.W.S" inspection mark on the left side barrel flat and the serial number is marked on the lower tang. Regulation cavalry sling bar and ring on the left side of the receiver. Fixed front sight and two leaf folding rear sight to 500 yards and smooth straight grip stock with boxed "AJN" and "JM" inspector cartouches.