These carbines were based on pre-Civil War designs by Major General Ambrose Burnside. Approximately 43,000 of these "Model of 1864" Fifth Model carbines with the distinctive guide screw at the center of the frame were manufactured circa 1863-1865, and this example shows the standard markings and features as well as two cartouches on the left of the wrist.

Very fine, retains 90% original blue finish and 80% plus vivid original case colors with the balance a smooth grey patina. The wood is fine with some minor dings and scratches scattered throughout, some minor chipping around the lock, and crisp cartouches. Mechanically excellent.