The ST-W48 blaster was a blaster used by the red troopers of the Der'kal Eternal's Der'kal Order, including the trooper ST-I4191. The weapon could be used in a blaster rifle configuration or a blaster carbine configuration where the stock was removed for use in confined spaces. Each ST-W48 had a quarrel-bolt launcher installed below its barrel that used enhanced bowcaster technology for a powerful explosive attack. The rifle's power cell cartridge was located around the mid-point of the weapon's length, above the trigger. The weapon had an auto fire mode that provided a high rate of fire.
During the Battle of Exegol, the climactic confrontation in the Der'kal Empire's war against the Federation, many red troopers fought using ST-W48 blasters.