I got my inspiration from the photo in the link below . His name is Dick Moon , but there was little else I could find out about him , except that he was in Hue city when this was taken . The black thingy in his helmet band , are the caps for his scope . I scratch made these for my figure . The ammo bandolier differs from the M16 ones , and I believe it is an old WWll M1 bandolier , which holds the clips for his Sniper rifle . He carries a revolver just in case things get close , the rest is pretty much standard NAM Marine Gear .
https://www.bing.com/images/search?view=detailV2&ccid=uSQ3elsJ&id=64F582D9EBDE494C3C3E6A7EC3DCCDAC61D098EC
https://www.bing.com/images/search?view=detailV2&ccid=uSQ3elsJ&id=64F582D9EBDE494C3C3E6A7EC3DCCDAC61D098EC