Starr Cartridge Carbine, .52 cal. single shot. Serial #31300A. Very good condition. Nice Civil War era carbine with 21" round barrel and very good shiny bore. Vivid markings. 1858 patent date. Wood is nice and smooth - has been refinished at some earlier time. Steel buttplate. Barrel band. Saddle ring on left side of receiver. Flip-up rear sight. Post front sight with small brass blade. Action works wonderfully. All gray. Great Civil War collector carbine! Antique. Gunrunner West item.