UC Vanguard gives a Standalone Armor for the UC Vanguard
 
Acquiring: UC Marine gear can occasionally be found in the game world to loot or buy.

This Requires the mod UC Surplus Stores Expanded, which adds all UC spacesuit variants to UC Surplus stores in Cydonia (Mars) and The Well (New Atlantis).

Alternatively, you can add using console commands, replacing ******* with the codes below:

player.additem ******** 1

SPACE SUITS
02000801     UC Vanguard Spacesuit
02000802     UC Vanguard Spacesuit Armored
02000803     UC Vanguard Spacesuit LightArmored
02000804     UC Vanguard Combat Spacesuit
02000819     Vanguard BackPack
0200081A     Vanguard Space Helmet
0200081B     Vanguard Armored Space Helmet
02000822      UC Navy Fatigues Vanguard
02000823      UC Navy Armored Fatigues Vanguard
02000824      UC Navy Hat Vanguard
02000825      UC Navy Duty Fatigues Vanguard
02000826      UC Navy Recon Fatigues Vanguard
For the blacked-out visor, I recommend Space Helmets - Dark Visors by Xtudo, selecting the 'UC Marine' file.

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Installation (Main file):

1: Make sure these lines are in your StarfieldCustom.ini in "Documents\My Games\Starfield\"

[Archive]
bInvalidateOlderFiles=1
sResourceDataDirsFinal=

2: Download the mod via mod manager (I personally use Vortex), or manually download and extract to your Starfield directory, ensuring
the folder structure is: "\Starfield\Data\textures\clothes\..."

Credtis
MonkeyChief117: For allowing me to use some of his ideas and textures on some part