I spoke to the service dept. at Remington about the differences and the most they would say is the finish is of better quality, and there were some stock changes. The customer service rep would not say what the changes were in the stock, as my statement to him was one is black XCR and the other green XCR II, his comment was yes thats correct. He never said nor would he say if there were internal changes or not.
I am about 50 bucks shy in my gun fund before I order one and its gone be the XCR II in 25-06.