Got mine yesterday. I got a machined 18650 body. My button and top cap are satin - I was going for a reversed two-tone look. It looks really good. I got the 18650 set up pretty quickly. I added an oring and had to remove one of the washers from the button and it works flawlessly. Threads match perfectly. And it looks great. I will post up some pics when I have a chance.
