The assaultron helmet appears to be the hardened head armor of an assaultron's head modified to be used as protective headgear. The face plates of the helmet extend toward the back of the head, revealing the wearer's face, while their weapon is holstered. When drawing a weapon, the mechanisms on the side of the helmet cause the plates to contract around the user's face, bearing a more kindred appearance to the assaultron.
Even though only the headgear slot is shown to be taken, headgear, glasses and bandanas cannot be worn with this helmet.
Though it can be modified with the same kinds of modifications as the metal helmet, none of the modifications show any change to the color whatsoever, including the shadowed modification.
While the user's weapon is holstered, the face panels will be slid back, revealing the wearer's face. Upon drawing equipped weapons, the face panels will slide into place until the weapon is holstered again.