I'd been wanting to do a full armor upgrade for one of the Fourth Generation mecha ever since I started the line. It finally came to fruition with this MOC. All the armor easily snaps on and off the model.
About this creation
Front view. The mk IIIA sports twice the armor and nearly double the armament of the mk III's Configuration 3.
View of armor being ejected, revealing the standard S-Type mk III underneath (it actually works too, not just in photoshop)
Sometimes the inside out parts don't look great, but in this model tese inside out parts on the outer layer of this model look great. They even look functional to me. It adds some extra content to the "outer armored protection layer".