The dude didn't have a Star Wars mask. I mean, I see how you could see the good ole' Darth in it, but it ain't a licensed product or anything.
He's got a paintball mask on; it seems to be either a Kingman(Spyder) or V-Force entry-level mask that comes packaged with a lot of low-end mechanical paintball markers. There's a chance that its some sort of JT Flex of some sort as well.
The helmet he has on isn't part of the mask. I'm no expert on military surplus, but it does at least look like a WW2 German Stahlhelm to me. Maybe a reproduction, or a novelty helmet meant to look like a kraut stahlhelm.
source: i play paintball like a my old friendet in european military surplus gear like a double my old friendet