M199 heavy machine gun

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M199 Heavy Machine Gun
H5G - Wasp firing on Sanctum.jpg
An AV-49 Wasp firing its M199 HMG.
Production overview


Heavy machine gun


Ammunition type:

7.62x51mm ammunition[1][2]


The M199 heavy machine gun is a 7.62x51mm heavy machine gun used by the United Nations Space Command. The weapon is the primary weapon system aboard the AV-49 Wasp, supplementing the aircraft's secondary 50mm M400 missile launchers. They are mounted on either side of the craft's cockpit with limited vertical rotation, allowing the pilot to aim them up or down - though lacking any kind of horizontal rotation.[1]

The M199's standard munitions are 7.62x51mm rounds, though specialised variants of the Wasp in Office of Naval Intelligence instead employ High Explosive Dual Purpose ammunition (HEDP) variants of the 7.62 calibre.[3] The AV-49H Wasp, an experimental testbed developed by Hannibal Weapon Systems, replaces the machine guns entirely with experimental gauss repeaters. These weapons appear to use the same external housing as the M199, suggesting they are derived from this system.[4]

List of appearances[edit]


  1. ^ a b Halo Encyclopedia (2022 edition), page 156
  2. ^ Halo: Official Spartan Field Manual, page 204
  3. ^ Halo 5: Guardians, REQ Card: ONI Wasp Description "The size and mobility of the Wasp makes it a favorite of ONI Security teams in high-threat environments. ONI Wasps are loaded with all-environment homing missiles and HEDP machine gun rounds. Advanced Wasp with heavy armor and upgraded weapons."
  4. ^ Halo 5: Guardians, REQ Card: Hannibal Wasp Description "Misriah Armory and Hannibal Weapon Systems collaborate on initiatives to evolve their existing offerings of weapon systems and vehicles. Advanced Wasp with heavy armor, gauss repeaters, and experimental ion field bomb launchers."