The wood handguards are rare, I've got one as well (I posted a picture of it in the first few pages and on the second page of this thread it's mounted on a rifle:
http://http://www.uzitalk.com/forums/showthread.php?44223-Latest-Tenngalil-builds-South-African-R-4-and-R-5&highlight=south+african). The first Galils are still in use, see the first picture in this thread, I have another picture that I could have sworn I posted already of some SANDF troops in formation and one of them has a rifle with wood handguards, a carry handle, and metal stock and everyone else has newer rifles. If I can't find it I'll post it tonight.
Also note that the drawing also pictures the smaller front sight hood that was on the first few thousand rifles.
I have one of the new bayonets with add on lug (I wish I could find one of the modified FN bayonets) that I need to post some pictures of, including a pic from an arms expo of one mounted to an R4.