Modeled after the storied US Marshal Witness Protection Remington 870, used for years to protect federal judges and apprehend federal fugitives. But really, what do they know?
Because they are a terrible idea. Heck, I have only been shooting 3 years, and even I know that a shotgun without a stock would be hellacious to shoot. A revolver is more easily carried and concealed, while a traditional shotgun with a stock is far easier to shoot well. Like most hybrid guns, it is trying to be a jack of all trades but ends up being a master of none. Horrible concept IMO...