A Legio Custodes Telemon Heavy Dreadnought armed with an Arachnus Storm Cannon and Telemon Caestus with built-in Proteus Plasma Projector and a chassis-mounted Spiculus Bolt Launcher.
An Arachnus Storm Cannon is a large Laser Weapon capable of unleashing rapid, gatling-style laser fire from its rotary barrel. It was employed by the forces of the ancient Legio Custodes, usually as part of the armament of a Telemon Heavy Dreadnought.