Variant 1: MJOLNIR Mk.V (Halo Reach-Halo CE Master Chief Armor)
Helmet: MJOLNIR Mk. V Variants > BASE
Left Shoulder: MJOLNIR Mk. V
Right Shoulder: MJOLNIR Mk. V
Chest: DEFAULT
Wrist: DEFAULT
Utility: DEFAULT
Visor Color: GOLD
Knee Guards: DEFAULT
Colors: NA (I recommend SAGE)

Biggest misconceptions: Most people think the knee guards are grenadier. To those people, I recommend looking up what Chief looks like in CE. His knee guards are flat and simple, not angular and advanced like his shoulders. Another misconception is about "default" armor in general. If you pay close attention to the armor descriptions, they seem to imply that default is in fact a Mk. V variant. Some lore nerds tend to think Halo Reach default armor is the hybrid prototype between Mk. V and the streamlined Mk. VI armors.

Variant 2: MJOLNIR Mk.VI (Halo 2-Halo 3 Master Chief Armor)
Helmet: MJOLNIR Mk. VI Variants > BASE
Left Shoulder: FJ/PARA
Right Shoulder: FJ/PARA
Chest: HP/PARAFOIL
Wrist: Default
Utility: Default
Visor Color: Gold
Knee Guards: FJ/PARA
Colors: SAGE, SAGE

Biggest misconceptions and bonus info: Some really old and cringe guide is telling people to make the chest default and the shoulder's Mk. VI. Just read the descriptions and the names of the armor people. All the Mk. VI is obviously all matching as PARA. People also doubt the SAGE coloring. Yes. It looks too dark in the editor, but in-game it looks like Halo 3 Master Chief's color.

Extras 1: ODST Armor (Halo Reach Era ODST Armor)
Helmet: ODST Variants > BASE
Left Shoulder: ODST
Right Shoulder: ODST
Chest: UA/ODST
Wrist: DEFAULT
Utility: UA/NxRA
Visor Color: SILVER
Knee Guards: GUNGNIR
Colors: STEEL, STEEL

Biggest misconceptions and bonus info: I see far too many mess up the details on this uniform. If you observe an ODST up close in Halo Reach, you can clearly see their wrists are uniform and have no extra gear, thus they should be default. A lot of people tend to think the visor is black or blue, but if you look closely again you'll see its a light blue-gray. Silver is the closest color, more so than black or blue. The ODSTs also feature a tiny flashlight on their helmet, and a lot of people put the massive and ugly attachments on it just to have a flashlight too.

Variant 1: MJOLNIR Mk.V (Halo Reach-Halo CE Master Chief Armor)
Visor Color: DEFAULT
Colors: Green

Biggest misconceptions and bonus info: Basically there's not much you can do to actually look like Master Chief in Halo CE. Green is the closest color and it still looks bad.

Variant 1: MJOLNIR Mk.VI (Halo 2-Halo 3 Master Chief Armor)
Colors: OLIVE, OLIVE

Biggest Misconceptions and bonus info: Once again, nothing much you can do here, olive seems to be the closest color and it still looks bad.

Variant 1: MJOLNIR Mk.V (Halo Reach-Halo CE Master Chief Armor)
Helmet: Mark V
Left Shoulder: Mark VI
Right Shoulder: Mark VI
Chest: LEGACY
Colors: NA (I recommend SAGE)

Biggest misconceptions: You'll notice the use of Mark VI armor. This is because there's really no substitute here, but the style of the armor in Halo 3 is true enough to look correct anyways.

Variant 2: MJOLNIR Mk.VI (Halo 2-Halo 3 Master Chief Armor)
Helmet: Mark VI
Left Shoulder: Mark VI
Right Shoulder: Mark VI
Chest: Mark VI
Colors: NA (I recommend SAGE)

Biggest misconceptions and bonus info: This is the default armor everyone starts equipped with on Halo 3.

Yes. I literally went out of my way to make this guide because of all the cringe.