The later version of the F-4E, an improved version of the F-4D, is finally available, equipped with the M61A1 20mm Vulcan cannon as the first fixed equipment in the extended nose.
The leading edge flap was changed to a movable slat in order to further improve air combat performance than the previous model, which adopted a hard wing with a fixed leading edge flap. This is a point that distinguishes it from the earlier model in appearance.

A gunblast diffuser has been added to the machine gun muzzle. Other, later versions had AN/ALR-46 RHWR antennas attached to the wing tips.

Even the electro-optical target identification sensor (TISEO) on the leading edge of the left inner wing, which was adopted in some late models, and the AN/ARN-101 antenna fairing on the back of the fuselage are flawless.