Manufactured from 1867 to 1869 with a total production of only about 200 in the carbine configuration with 70 having been sold to the state of New York for prison guards at Sing-Sing prison. Blade front and folding leaf rear sights. Four line address and patent marks on the left side of the receiver. Percussion nipple has been removed from breech block. Smooth forearm and straight grip stock with a steel buttplate and sling swivels.