The Q-System has the highest base damage of all three Atlas assault rifles, and fires two projectiles at the cost of 1 ammo, offsetting its otherwise low fire rate. With no major penalties to its other stats, Q-System vastly outperforms other Atlas assault rifles and is one of the few common weapons able to compete with legendaries on higher difficulties.
O.P.Q. System – Legendary assault rifle that can deploy a miniature drone replica of the weapon that follows the wielder and fires at targets.
The Q-System is obtained randomly from any suitable loot source.
All Q-Systems come with the "Cost-Effective" prefix.