From Halopedia, the Halo wiki
This article is about the M12 weapon. For the vehicle, see M12 Warthog.
The M12 is a heavy belt-fed machine gun used by the United Nations Space Command. During the Human-Covenant War, dual M12s were mounted on the shoulders of the "Attack" variant of the HRUNTING Mark III Cyclops, which was itself utilized by the UNSC Marine Corps.