Just a shortened barrel and magazine tube on a Remington 870 with an added pistol and fore end grip, (capacity lessened to 2+1).

NFA registration is needed for this configuration.

This configuration is commonly used for Executive Personal Security or to defeat hardened targets and or to defeat door locks and hinges with certain ammunition.

It can also used with less-than lethal ammunition in certain environments.

There are several civilian commercial manufactures offering these for sale to the public.