Mossberg have released a few versions of this:
They say
I say, pity we are restricted by length as this is a nice idea however I would prefer a folding stock to a pistol grip for a bit more control.The heart of the JIC™ package is the venerable 12 gauge Mossberg® 500® Pump-Action. Fitted with a compact 18-1/2” barrel and rugged synthetic pistol grip and forearm, it’s offered in your choice of the blued Cruiser® model, the Mariner®, or the Sandstorm™ featuring our proprietary Marinecote™ finish for employment in or around harsh marine environments. Each is sealed in a re-sealable clear bag, and is packaged in a heavy-duty, waterproof synthetic carrying-tube complete with re-sealable top and nylon carrying strap. You’ll also find convenient accessories including the waterproof ‘Survival Kit-In-A-Can’ (Cruiser® model), or the durable multi-tool and serrated lock-back knife combo pack with cordura case (Mariner® model).
