I bought one of the .45 Oly uppers years ago, it's been 100% reliable, it's fun and it's quiet (especially with 230 grain's)
Don't have any pics, fit was decent with the DPMS lower, but finish was horrible. It's a stainless barrel with a thin black finish that they didn't seem to finish. It's not rub-marks, but it is possible to see the stainless "peeking" through the finish.
Also, they take an anodized upper and cut it for the ejector system. This means you have exposed aluminum, nice and shiney and silvery.