These are as old as it gets for my space marines. Metal bodies, plastic arms, old style bolters. If we want to get really old I while keeping in the 40K universe I have epic scale marines and such, but this challenge asks for 40K stuff that is painted so this is the best I can do.
Update: I was selected in the random drawing to get the prize. I will post a picture of it when it arrives and will tell my conversion plans to make him fit in my chapter.