Update 4.1.3:
I file to keep them all. I added all the optional versions (I think) to the main zip so you don't need to bother swimming between multiple small ones trying to find what you need. Descriptions for what every main, optional and alternatives files contain inside their respective folders.

I added a version of the sneaking suit (Sneakng D) that gives Snake a balaclava. Venom's equivalent to Raiden outfit. I also fixed a problem with Sneaking C.

Another small update: There is an alternative version for the Sneaking Outfit (Sneaking C) that gives Snake the tactical googles. Basically is the ninja version without the powers, and with horn and bionic arm. The only problem is that the ponytail will look slightly odd and the bandana will look bad, so don't wear it. I will try to fix both problems in the future.

Small update: Solid D now has full balaclava; basically Raiden version from main zip. Raiden Patch fixes a potential problem with helmet lights; install instead of the main version. Individual files is for people who may want to install some replacement but not others for the sneaking suit and battledress, like Snake only, or everything but females, or just NPCs, etc; install the main texture file (always required), the texture file for that outfit (battledress and/or sneaking suit) and the replacement or replacements you want, in any combination, and the UI file if you want to replace the outfit icon in the sortie prep menu.

Update 4.1.2:
I made the handgun holsters visible for the optional battledress replacements C & D.

Update 4.1.1:

Small update. It fixes Big Boss moustache not having transparency in the ninja outfit (personally my favorite).

Update 4.1:

Now some of the model files are separated between Version A and Version B. Version A files have headphones when you don't equip the balaclava, both for regular soldiers (male and female) and for Big Boss. Version B files don't have headphones without the balaclava, which means that Big Boss can't wear headset. (Only bandana.)

That's the only difference between the two. Install just one file for every version, but mix as you see fit. For example, don't install versions A and B of the battledress, but you can install version A of the battledress and version B of the sneaking suit, and the same with the others. Some files, like the ninja, may only have one version.

I also changed the handgun for females from the left leg to the right leg, and the knife from the right one to the left. I think it looks better that way.

Last Minute Update (for version 4.0):

As an alternative, I uploaded a new version of the battledress and sneaking suit replacements. The headset is now part of the outfit by default and you decided if you want to cover your face or not with the tracking googles and mask. Install these two files instead of the ones inside the main folder in the main download. It is a matter of preference if you prefer one version or the other.

Warning: The helmet now doesn't have headset so you should install both replacements or none, and try not to give male and female soldiers on Mother Base different outfits. I haven't test it yet but it could look funny if some soldiers appear with a broken helmet on the field. I will check it out and update it next week if necessary.

NOTES FOR UPDATE 4.0:
New version adds support for NPCs. You can select the battledress or the sneaking suit in Infinitive Heaven to have your soldiers to wear it, or fight against them in Mother Base events. If you choose different outfits for female and male soldiers both will use the same helmet, so it may be better to dress both the same. The radios in the back turn themselves invisible when soldiers call CP, a function that doesn't exist in MGO3.

Updated skeleton. Previously faces didn't deform properly. Now they do.

If you want to play with Ground Zeroes Big Boss without horn, tail and prosthetic arm there is no need to use The Man Who Sold The World mod variant anymore. You can select Solid Snake now. There are two versions: one with headset and one without it in the alternative folder. Or you can choose the Ninja: Snake uses the cool night vision googles that regular soldiers use but with uncovered face. Or you can choose Raiden in which case the face will be covered.

I also added a handgun holster to make it fit TPP standards a little better.

NOTES FOR UPDATE 3.0:
This new version brings plenty of new features. The first and most important one: it adds a female version now so Diamond Girls can wear it too! Another important feature is that the uniform recieves blood now. (There is no blood on the body in MGO3 so it took some trickery to make it work but it looks terrific in action.) I also decided to go an extra step and add lightning to the helmet and to the radio on the back. Now DDs look very cool at night operations!

Additional note: The knife in the female outfit works properly, even if in MGO3 doesn't.

Note for update 2.0:
Now there are several files available. The main one install the textures. This one is required. Then you choose any or all outfit files. It's advisable to install all the first time to see the different color variations before chosen the ones you like, and is valid to keep all of them of course.

Note for update 1.2:
Colors now match perfectly. Now Snake can also wear the outfit and it's compatible with the bandana and the prosthetic arm. There is a SP version of it with the helmet and without prosthetic arm. Added picture and the description to the sortie prep menu.

Note for update 1.1:
I fixed a problem with the missing eyes and made the textures match. (I think.) I also replaced Raiden costume in case you want to run fast with it.

Description:

This mod replaces several outfits for a tactical outfit found on Metal Gear Online 3. To equip the helmet choose the balaclava on the sortie prep menu. Note that Big Boss can't use helmet.

The uniforms are:

- Battledress (Same color patron, helmet lights are orange for PC and red for NPCs)
- Sneaking Suit (Green color patron, helmet lights are reddish for PC and green for NPCs)
- Leather (Camouflage patron)
- Solid Snake (Big Boss without horn)
- Ninja (Big Boss without horn, gray color patron, headset, night vision googles, uncovered face, lights are white)
- Raiden (Camouflage patron, headset, night vision googles, face covered, lights are blue)

Version A gives soldiers headphones even without the balaclava, also to Big Boss. Version B removes the headphones if you are not using the balaclava.

This was made by request as apparently there are no mods that add multiplayer outfits for male soldiers. Well, now there is at least one.