The M3 Jackhammer Automatic Combat Shotgun is the sole product of Mark Three, a small Albuquerque, Pueblo Corporate Council Company. At the time of this writing, the company is in the process of moving its operation out of the possible crossfire between the Confederated American States and Aztlan, to the safer city of Flagstaff, in what used to be the state of Arizona.

Integral Flash Suppressor. Includes shoulder stock. This weapon cannot accept any top, barrel under-barrel, or stock mounted accessories, and has a maximum full-auto fire rate of 5 rounds per Complex Action. This weapon has no burst-fire facility. Due to its specialized ammunition feed system and strengthened mechanics, it can fire standard and high-pressure CAWS-type rounds, depending on the type of cassette loaded.
