Trenchmate CQB

If you were to look in a WWI or II training manual, you may find that an "entrenching tool" i.e. a shovel, is said to be the best weapon of close combat, especially true in trench warfare. Another renowned weapon for Close Quarters Battle(CQB) is the shotgun. Brandished by many a hillbilly at Repo Men, and discharged towards locked doors by SWAT teams and the like. With a wide range of available ammunitions and models, the pump shotgun is a boon to any person involved in CQB. That said, why not combine the two weapons? Many pump shotguns, such as the SPAZ make it possible to replace the tubular magazine inder the barrel instead of refilling it manually. A shovel blade is customarily mounted on a cylindrical shaft, so why not attach the shovel blade to the cylindrical magazine itself, or perhaps to a similiar shaft mounted under the barrel to keep the option of switching the magazine viable, after all this weapon wouldn't be of much use if reloading removed the shovel portion. The shovel blade would have to be slightly modified, flattened, or inverted to keep the tip of the shovel out of the line of fire. The shovel could also be sharpened to serve as a bayonet as well as a bludgeon.