.54 caliber. 8.5" barrel. NSN. Bright finish, brass furniture, walnut stock. Single shot muzzleloading smoothbore percussion ignition pistol with swivel ramrod, no rear sight and brass blade front sight. Lock with standard Aston markings and dated 1851 at tail. Tang with matching 1851 date, breech with US/GW/P inspection marks as well as an MS ownership mark for Massachusetts. Counterpane with a pair of clear script cartouches, the first the WN of arsenal sub-inspector Walter North and the second the WAT of Ordnance Officer William Anderson Thornton. A nice example of the last percussion muzzleloading single shot pistol to be adopted by the US military for widespread issue. {ANTIQUE}