Based on a rifle originally designed for downed bush pilots, the caliber-convertible Aero Survival Pistol from TNW Firearms is surprisingly handy for its size.
What is an ASP? Among other things, it is an exotic custom-made 9 mm pistol developed by the mysterious Paris Theodore, who was reportedly an undercover agent for the U.S. government. It is documented that Theodore, a New Yorker, was the driving force behind Seventrees, a maker of custom holsters of legendary quality.