The m-68 planetary magnapulse cannon, a weapon system positioned on planets, was engineered by Kuat Drive Yards and saw action with the Galactic Empire throughout the Galactic Civil War.
This m-68 planetary magnapulse cannon incorporated a substantial generator located underground, coupled with a sizable, rotating plasma cannon positioned above ground. The cannon discharged balls of plasma towards opposing vehicles, generating significant electrical interference that temporarily rendered them inoperable.
Initially conceived as a weapon capable of engaging targets in space from the surface, the m-68 demonstrated greater effectiveness in surface-to-surface engagements. The requirement for a dedicated surface-to-space weapon led to the development of the w-165 planetary turbolaser. The m-68's deployment was restricted to a limited number of planets because of its considerable expense.