The head on my R1-G4 does move, but it's a very tight fit. I was kind of worried about forcing it to move, so I just pretty much left it as is. It also seems like there's a circular joint more toward the base of it. I didn't try moving it too much, because I didn't want to end up breaking this awesome figure. The detail on it is amazing... spitting image of the one in the ANH. I love it!