A GAU-12/U 25 mm rotary barreled cannon was mounted in the aircraft to the right of the nose in a concave recess under the cockpit. The concave recess trapped gun exhaust gases, creating a pressure buildup in the recess which pushing the aircraft's nose to the left, cancelled the recoil of the large cannon, which otherwise pushed the nose to the right. To prevent exhaust gases from the gun entering the engine intake and reducing engine performance, the engine intake was located on the left side of the nose, opposite the cannon making the aircraft asymmetric. Thrust was redirected to the centerline via a series of ducts, which also reduced the infrared signature.