The M-12 was an Imperial-class sweep bomb used for heavy demolition and leveling for the Galactic Empire or, in some cases, their manufacturer's director, Kuat of Kuat. The high-pressure explosive originally used a removable atmospheric phase-change detonator.

A failure rate of nearly ten percent caused the line to be discontinued, forcing the Imperial Navy to update to a more reliable integrated gravity-wave system inside the bomb itself.

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