With GN Drive Tau-equipped mobile suits being the standard units of the Earth Sphere Federation Forces and the A-Laws, the Arios's armament was significantly enhanced to fight against them. The Arios's main armament was the GN Twin Beam Rifle, a double-barreled beam rifle with high accuracy and rapid-fire capability that could be used in both MS Form and Flight Form. Other ranged weaponry included double-barreled GN Submachine Guns built into both forearms, and GN Vulcans built into both sides of the Flight Form's nose unit. For melee combat, the Arios could use a pair of GN Beam Sabers stored on the back of the left and right front waist armor. Lastly, Arios's shoulder binders were equipped with GN Beam Shields – a new defensive armament that generated beam shields made of GN Particles. In Flight Form, these shoulder binders turned into the nose unit and can be used as a claw, with the beam shields now serving as beam blades. The built-in GN Beam Shields also helped to reduce Arios's weight for flight purposes by eliminating the need to equip a heavy physical shield.