Donna heard the explanations given by Naina. "So a replica?" She responded. "But unlike us it's for test piloting. We have to rely on old blueprints here."
The Instructor answered her question. "This Sandrock is actually a reconstruction." He replied. "We lost most technologies following the Great Disarmanent after the Mariemeia Rebellion so we had to start from scratch, using whatever we can find data on to manufacture. When we found the blueprints of the Gundam we began manufacturing it in hopes of changing the war for our favour." He gave a brief look at the black, green and red colour scheme. "The colour does not indicate a modification with the exception of the pilot's specification in mind. These are her personal colours as well." He gave a thought about the Tallgeese's calibrations. "Maybe I can give a look at the calibrations of the G force reducer with you later if that helps." He offered. "The Tallgeese is the ancestor of all Mobile Suits so I have the know-how at least."