About .60 caliber. 40" octagonal Damascus barrel length. SN: NSN. Browned metal finish with brass fittings. Figured Circassian walnut stock has a hexagonal butt with engraved neoclassical brass fittings and forearm with six engraved brass bands. Miquelet flintlock rifle has a primitive aperture rear sight with four vertical peep sights and a copper blade front sight. Barrel has 9-groove rifling. Item features what appears to be a modern wood ramrod replacement without  tip.