The magna-gun represented a formidable line of ion cannon technology found on the planet of Brentaal IV. In 21 BBY, as he sought to expand his influence, the Separatist warlord known as Shogar Tok seized these magna-guns, positioning them strategically within his fortress located on that very world. However, during the Battle of Brentaal IV within the larger conflict of the Clone Wars, these weapons were subjected to sabotage at the hands of Jedi Master Quinlan Vos.