The Q25 (Q for 輕, qing, light) is of lightweight construction and a tight profile, a bullpup, necessitated by limited mass allowance and space on spacecraft that transport the carbine and its
users across interstellar distances. It prominently features a hydraulic dampener at the buttstock, and a 4-way recoil control
system at the front barrel, which uses gas generated by the cartridge for aim assist during prolonged, automatic fire. A laser range-finder and infrared sensor are dual mounted on the front, left-side of the carbine. A QN-7 "Gun Brain" computer resting inside the grip coordinates between the on-weapon sensors and the user's on-suit sensors, along with the recoil control systems, to conduct aim assist. The carbine's primary structure is perforated, for both mass savings and for thermal control in vacuum environments. Finally, a main rail at the top of the gun and a secondary rail at the bottom, in front of the grip, allow for a variety of attachments. Q25's are mounted with a red dot sight by default.