The MG1-A was a type of proton torpedo which was, at the time of the Battle of Praesitlyn, newly developed and yet to be tested in battle. The Centax-class heavy frigate Ranger was armed with two MG1-A torpedo batteries and was the first ever vessel to employ them in combat. In the opening shot of the battle above Praesitlyn, Ranger fired a salvo of the warheads at a Separatist Droid Control ship, who was jamming signals in the area, successfully eliminating the target.