Most of the Model 1865 Spencer carbines were manufactured in 1865 and 1866 after the end of the Civil War. Many were used during Reconstruction and in the Indian Wars before the Springfield Trapdoors were widely issued. It features blade front and folding ladder rear sights, small single letter inspection initials marked on various components, "J.L.C" (Joseph L. Cottle) inspection initials on the left of the barrel at the breech, and two inspection cartouches on the left side of the stock behind the saddle ring bar.