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M870 Rampart point defense gun

From Halopedia, the Halo wiki

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 the UNSC Navy, typically as part of a ship-wide defensive network.[2]. Each M870 "gun",[3] or "Rampart",[1] is a fully-automated hull-based turret emplacement,[4] typically consisting of a battery of twin-[5] 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;[4] 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 UNSC frigates, including Charon-class light frigates[3], Stalwart-class light frigates[6] and Strident-class heavy frigates.[1] However, they are also utilised on Gladius-class heavy corvettes,[4] Halberd-class destroyers,[7] and even Epoch-class heavy carriers,[8] making them a relatively common fixture across the entirety of the UNSC fleet.


List of appearances[edit]


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