Produced by the Burnside Rifle Company as subcontractors, 34,000 carbines were made c. 1865. Fitted with the distinctive 3-groove rifled barrel and forearm with single barrel band. Lug blade front and folding ladder rear sights. The casehardened frame is marked with the model and four-line address on the top near the breech and the serial number at the rear. It is not fitted with the Stabler magazine cutoff. The left side barrel flat is marked "J.L.C.". Most components have single letter sub-inspection marks. It is fitted with a saddle ring and bar, straight grip walnut stock and forearm with a single sling swivel on the bottom of the butt and a smooth buttplate with a removable tube magazine.