I'll have to take some pictures of mine. It was made by a village gunsmith in Nigeria, and brought to this country by a Bell Telephone tech who was working there. It has a long barrel made from tubing. Whoever made it knew what he was doing. Obviously has been used, but I would be hesitant to fire it. These guns are referred to as "Dane Guns". They were used to get bush meat. African governments were uncomfortable with their people owning modern firearms, so these muzzleloaders were tolerated.
If you stop and think about it, these guns were used for the exact same purposes that plain utilitarian guns were used for in America.