How the hell do you tell if you can add a mod slot to a weapon?

[UberNinja]

All weapons can be given max mod slots.
They must be unequipped from all loadouts, even your main one.
Because the item is placed in a queue when it adds the slots.
Do not sign off when you do this and make sure the server isn't hiccuping, otherwise you will lose your gun and have to contact support to get it back.

Ditto, adding mod slots choice will only show up if you have the weapon unequipped

[russell733]

When you look at the weapons in inventory you will see a series of four _ _ _ _ after the weapon if it can be modded, some weapons have nothing there and cant be modded at all. If it has an open mod slot it will show as a _ 0 0 _ which means slot 2 and 3 are available, and you can add mod slots to make slot 1 and 4 available.

Slot 1 is the stock, 2 is the barrel, 3 is the magazine, and 4 is the sight

[Scyris]

Hmm, maybe it must have been auto added to one of my other loadouts, because I know that I have only ever actually put anything into my main one. I'll check it out.

Thanks all. This clears some stuff up.

[Maetrik]

Yes you can if the gun is ellegible for adding mods it will give you and option to "Add Mod Slots" but it will cost you resources. I think that option is available once you level up more I'm currently at EGO level 901.