Following the Battle of Endor in 4 ABY, Balmorran Arms was liberated by the New Republic, allowing it to remain independent for five years. During the Thrawn Campaign in 9 ABY, the company also supplied SD-9 battle droids to the New Republic in limited numbers. However, during the Reborn Emperor Palpatine's insurrection, Bamorran Arms was brought back into Imperial service. However, following Palpatine's supposed death near Da Soocha V, the rebellious Balmorrans rebelled against the Empire.
In retaliation, the planet was attacked by a force under the command of ExecutorSedriss QL, including Shadow Droids and SD-9 battle droids. After suffering surprising losses at the hands of the SD-10 battle droids and new Viper Automatons, Sedriss called off his attack in exchange for a shipment of the molecularly-shielded droids.