In prior hundreds of years, gentlemen carried flintlock solitary-shot pocket pistols, often even with just a little folding bayonet on them, inside their tailcoat pockets. That gave solution to the percussion one-shot that even currently continue to bears a Variation of Henry Deringer of Philadelphia’s identify. William Elliott’s Double Derringer, https://garrettxnwdj.glifeblog.com/32165041/not-known-factual-statements-about-olding-pocket-pistol