.56 caliber. 25.5" three-stage pinned octagon to round barrel. SN: NSN. Blued finish, brass furniture, walnut stock. Enfield style percussion lock marked "I HOLLIS & SONS" with the Isaac Hollis trademark to the rear of the of the hammer. Barrel with post-1813 Birmingham proof marks. Typical Northwest Trade Gun styling with brass "serpent" side plate, oversized iron triggergaurd, multi-stage barrel and simple raised carved aprons around the breech plug tang and the rear of the lock mortise. Barrel and forend both shortened during the period of use by approximately 10" or so, retaining only one of the corrugated brass ramrod pipes. Buttplate removed as well. Includes a wood ramrod.