M-series facility

M-series facilities were a type of Forerunner installation. All Huragok under Covenant employ were collected from M-series facilities by the San'Shyuum Reformists some time after they left Janjur Qom in 2100 BCE.

Behind the scenes
Halo: Cryptum describes Huragok as serving aboard semi-automated maintenance stations in the moons of the outer worlds of San'Shyuum home system; as such, it is possible that these are M-series facilities, with "M" possibly standing for "maintenance."

List of appearances

 * Halo 3
 * Bestiarum