M370 autocannon

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M370 autocannon
Production overview






Ammunition type:

70mm (2.76 inch) depleted uranium round

Rate of fire:

Fully automatic

Service history

In service:

Human-Covenant War


The M370 autocannon is an anti-personnel/anti-vehicle weapon mounted below the nose of most D77-TC Pelican dropships.[1] The weapon fires 70mm depleted uranium slugs and is sometimes twin-linked with another such weapon, doubling its firepower.[2] The gun is linked to the movements of the pilot's head, which allows for very short delays between spotting enemies and firing; the turret can rotate up to 120 degrees to wherever the pilot is looking. The turret can also be operated by a copilot, or manually by a gunner.[3] The weapon seemingly replaced the 40mm chain gun that was common prior to 2525.[4]

Pilots and gunners of D77-TC Pelicans equipped with M370s are able to use the Integrated Helmet and Display Sight System to allow them track targets with head movements and display weapon information on their heads-up display.[5][6]


List of appearances[edit]


  1. ^ Halo: The Essential Visual Guide, page 135
  2. ^ Halo: Ghosts of Onyx, page 40
  3. ^ Halo: The Flood, page 39
  4. ^ Halo: The Fall of Reach, page 92 ("John sized up her armaments - dented and charred armor, a pair of old, out-of-date 40mm chain guns.")
  5. ^ Halo: Combat Evolved: Sybex Official Strategies & Secrets, page 66
  6. ^ Halo: the Flood, page 77