M870 Rampart point defense gun

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M870 Rampart point defense gun
H3 - M870 Rampart.JPG
Production overview


Point defense gun


Ammunition type:

  • 50mm sub-caliber armor-piercing sabots[1]
  • 50mm proximity detonation fragmentation shells[1]

Rate of fire:


Effective range:


Service history

In service:


The M870 Rampart point defense gun is a weapon system utilized by warships of human make, most commonly those of the UNSC Navy. They function as part of a ship-wide defensive network.[2] Each M870 Rampart turret is fully automated due to the inability of humans to calculate firing solutions fast enough for the role of the weapon,[3] and consists of of twin-[4] or quad-mounted 50mm[2] rapid-fire coilguns and a targeting scanner.[1] Point defense guns such as these are used for the engagement of incoming threats, including the warding off of strikecraft and the disruption of Plasma torpedoes;[3] each emplacement actively switches between sub-caliber armor-piercing sabots or proximity detonation fragmentation shells based on a threat-analysis of its current target in order to maximise effectiveness.[1]

M870s are most commonly mounted on lighter frigate and corvette type UNSC and CMA vessels, including Scholte-class missile corvettes,[5], Gladius-class heavy corvettes,[3] Charon-class light frigates,[6] Stalwart-class light frigates,[7] and Strident-class heavy frigates.[1] But they can also be found mounted on select heavier vessels, such as the Halberd-class destroyers,[8] and even the Epoch-class heavy carriers,[9] making them a relatively common fixture across the entirety of the UNSC fleet.


List of appearances[edit]


  1. ^ a b c d e Halo: Warfleet - An Illustrated Guide to the Spacecraft of Halo, page 39
  2. ^ a b Halo Waypoint: UNSC Frigate
  3. ^ a b c Halo: Warfleet, page 19
  4. ^ Halo 3, Charon-class frigate in-game model
  5. ^ Halo Waypoint, Canon Fodder - Foundations (Retrieved on Jan 12, 2022) [archive]
  6. ^ Waypoint: The Halo Bulletin: 10.10.12 (defunct, backup on
  7. ^ Halo: Warfleet, page 37
  8. ^ Halo: Warfleet, page 32
  9. ^ Halo: Warfleet, page 40
  10. ^ Halo Waypoint: Canon Fodder - Have S'moa