heavy weaponry

Heavy Ion Launchers

These superweapons were employed on siege platforms and the largest Forerunner-class warships. Though considered crude and indelicate, their bolts of exotic matter were almost impossible to counter or stop. A single strike was enough to annihilate even the largest and most well protected Flood hive, and multiple strikes in quick succession were enough to render a world uninhabitable.

Halo Encyclopedia pg. 377