In past centuries, gentlemen carried flintlock one-shot pocket pistols, in some cases even with just a little folding bayonet on them, within their tailcoat pockets. That gave solution to the percussion one-shot that even these days nevertheless bears a version of Henry Deringer of Philadelphia’s identify. William Elliott’s Double Derringer, https://olding-pocket-pistol92345.blogminds.com/the-ultimate-guide-to-switch-gun-22-30425530