Fibril cutter

An ancient human warship equipped with fibril cutters.

Fibril cutters are a classification of weapon system employed by ancient human warships and catalogued by the Forerunners. At some point, an ancient human warship equipped with fibril cutters as its primary armament was recovered by the Office of Naval Intelligence at Site Yankee-002-G3, in which a report was filed, recommending further investigation to be assigned to team members on AZURE MOON.