In earlier hundreds of years, gentlemen carried flintlock single-shot pocket pistols, in some cases even with a little folding bayonet on them, within their tailcoat pockets. That gave approach to the percussion single-shot that even currently still bears a version of Henry Deringer of Philadelphia’s name. William Elliott’s Double Derringer, https://switchgun2296099.look4blog.com/71530640/the-definitive-guide-to-switch-gun-22