The Coating is just color change paint. Pictures make it look kind of crappy but in person it is kind of cool.
Didn't weight it but is lighter and kicks less. Now I just need a regulator.
I forgot to put on there this has a modified valve and polished internals. It also has a switch (on the grip with an green LED to show on/off) giving it two shot per pull of the trigger so my wife can keep up with me and my AMG. I plan on putting in a SD board so I can be used in tournys.