The install would be exactly the same. As any other type of hop unit. You just cut the nub to size test fit it. Test fit it again before you put it all back together and Bobs yer uncle. It could get a lil harder if you were planning on resizing the window in the hop unit but you would have likely model the barrel before needing to mod the hop unit extensively so that also shouldn't be an issue. Just test fit, trim, test fit and so on til it fits good and put it all together. The same way as the m4 hop up. The likely reason for lack of tutorials is exactly that reason. They are prety well the same.
http://www.airsoftforum.com/board/to...compatibility/
They discuss how the just all is prety well the same just cut the nub to the size of the rhop/hop window then test and retest/re trim till its perfect