Original Burnside Carbine barrel & receiver #10852 with original front sight. All threads are in excellent condition. Receiver has a H inspector mark. Barrel has a s inspector mark. Markings of Burnside Patent Model of 1864 are present. Cast steel marking present on top of barrel. Receiver and barrel have a very attractive smooth blue & black patina. The bore has deep rifling with a mix of scattered light & medium pitting. This in very good overall condition.