A simple model based on the 1mm Derringer pistol made by a professional jeweler and a watchmaker at Miniature arms https://minifirearms.com/. This pistol is currently the smallest production pistol in the world at 26mm in length and 15mmin height while being chambered in the smallest centerfire production cartridges the1X38mm cartridge. The 1mm Derringer Pistol is even smaller than the commonly claimed as being the smallest pistol in the world the 2.7mm Kolibri pistol. The 1mm Derringers are crafted from fine materials like silver and gold (this one is in silver).