That's a lot of detail in one toy. It's amazing how the technology has changed; the original toys had 5 points of articulation only (neck, shoulders, legs) and certainly no great accessories. Really neat find.
(Incidentally, Rex was retroactively added into the Battle of Endor in Return of the Jedi to be this guy in the picture)
In fact, they are still bringing out Star Wars toys with 5 points of articulation, but evidently, they are not as good sellers as these or the vintages that have more articulation.
Rex is amazing, in fact, I have his figure and they also respect every detail.