Rebel Assault Troopers

I had this low poly helmet in my collection for a while. Now I've spruced up ; ) But I kept no information about it, so I'm not quite sure what star wars universe its from. It was in my star wars folder, so thats a good start! But I'm thinking perhaps its an early X-Wing helmet form ROTJ? If you recognise this helmet, any advice is appreciated. Enjoy and as always, check the sizing suits your needs, Cheers Jace