Percussion belt pistol.
https://diqn32j8nouaz.cloudfront.net...elt_pistol.jpg
More:
https://collections.royalarmouries.o...ect-50842.html
Previously:
https://www.homemadetools.net/forum/...688#post143601
https://www.homemadetools.net/forum/...038#post125473
https://www.homemadetools.net/forum/...6135#post83111
https://www.homemadetools.net/forum/...226#post145940
https://www.homemadetools.net/forum/...568#post136168
