Are Rich's notes on Propsummit? I don't recall if I actually read them.
Consider this screencap:
http://i872.photobucket.com/albums/...1-88E9-4105-A85B-380534B552E8_zpsxveqtg24.png
The screen cap definitely looks blued. In low light a narrow reflection betrays a dark shiny finish. A matte reflection would be more diffuse with lesser contrast. The photo shows some diffusion so there's an argument for a satin (semi-gloss) black.
With a polished but "non-blued" surface you want to look at reflections of ambient light (as opposed to point-source) where you can see the true color. You'd find this over the top of the receiver in the reference photo. In that case the top of the receiver would be lighter in color. In this case it's black.
The tough part is appreciating the degree of actual ambient light which is difficult to appreciate without knowing more about how it was filmed. It's filmed to look like a black gun, at least. So that's the look I'm going for.
I can say that with more certainty since I now have the Final Cut Blu-Ray to reference instead of my old VHS or DVD copies.