About .50 caliber. 38" heavy octagonal barrel. SN: NSN. Browned or blued metal finish. Straight grip full stock with figured walnut or maple burl stock, Roman nose curve to butt, and carved cheek rest. Flintlock rifle with notch rear sight and Rocky Mountain blade front sight. Item features a Lancaster School style brass patchbox with daisy finial, simple light scroll engravings, and seven screws. Item also features double set triggers, silver blow out valve, and a lock that is marked TOWER to tail with a {crown}/GR mark to center. Barrel has light zig zag engravings in front and behind rear sight, but appears to be unsigned. Possibly reconverted to flint from percussion at some point.