I think we're calling them that cause that's what they call them in the game.
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Since when are they all refered to as Force Masks in the game? The Force Shielding Visor, Shielding Visor, Advanced Shielding Visor, etc. all look exactly the same. As in, there is no way to tell them apart just by looking at them. The masks that the mercenaries are wearing could be any one of those.
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enhanced shielding visor. unfortunately, they spelled it wrong and put enchanced shielding visor.