Mark 57 Arena point defense gun

The Mark 57 Arena point defense gun is a kinetic point defense gun utilized by the UNSC Navy after the Human-Covenant War. The had six individual Arena turrets, with each pair being mounted in a 'quickshot' configuration on three of its Mark 55 Castor naval coilguns.

List of appearances

 * Halo 4
 * Spartan Ops
 * Halo: Escalation
 * Halo 2 Anniversary
 * Halo 5: Guardians