M870 Rampart point defense gun

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. . Each M870 "gun", or "Rampart", is a fully-automated hull-based turret emplacement, typically consisting of a battery of twin- or quad-mounted 50mm rapid-fire coilguns and a targeting scanner. 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; 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.

M870s are most commonly mounted on UNSC frigates, including s, s and s. However, they are also utilised on Gladius-class heavy corvettes, Halberd-class destroyers, and even Epoch-class heavy carriers, making them a relatively common fixture across the entirety of the UNSC fleet.

List of appearances

 * Halo 2
 * Halo 3
 * Halo 3: ODST
 * Halo Legends
 * Origins
 * Halo 4: Forward Unto Dawn
 * Halo 4
 * Spartan Ops
 * Halo 2 Anniversary