3A REX model By Mr Wolfe | January 16, 2012 - 3:44 AM |January 16, 2012 Metal Gear Solid, News Detachable armor plating let’s you see the innards of the machine. Now, when can I get my hands on it? Source 1 / 2 Tagged 3a, armor, metal gear rex, model, replica. Bookmark the permalink.