The Assault Cannon was developed after the end of the Horus Heresy in the early 31st Millennium as a replacement for the Autocannon.
It is a medium calibre rotary Autocannon, with its 6 barrels cycled by an electric motor past a single chamber. The Assault Cannon is a ballistic six-barreled, self-loading rotary Autocannon, effective against infantry targets and light vehicles at close to medium range.
The Astartes Mark VIII Absolo Pattern Assault Cannon commonly used by Space Marine Terminators
