Meanwhile, the GRD attachment replaces the traditional visor with a grey metal plate set into the helmet, and adds a large circular lens-like apparatus in front of the wearer's right eye.

When the CBRN module is equipped, some form of breathing equipment is placed in front of the user's mouth, and some new armored plating obscures the lower part of the visor, up to around where the user's nose would be. There is a cylindrical protrusion on either side of the helmet made of grey metal, just behind where the wearer's ears would be located. Two armored strips adorn the sides of the helmet, running along the sides of the helmet at the bottom of the visor, but stopping just before they meet, creating a 'V' shape by the user's mouth. Its visor features a horizontal strip at the user's eye line which is set slightly deeper than the rest, leading to two parallel ridges in the glass. Its helmet is quite blocky in shape, with the top and each of the sides being mostly flat. The armor set includes at least a helmet and a chest piece.

4.4 Halo: The Master Chief Collection menu images.4.3 Halo: The Master Chief Collection datamined models.

4.1 Defiant Map Pack promotional images.

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