The MS-14A is the mass production version of the Gelgoog, it was equipped with a shield, a twin beam sword (also referred to as a "beam naginata") and a beam rifle, a first for a Zeon mobile suit. The Gelgoog was a superior mobile suit in every aspect to the MS-06F Zaku II and even the MS-09R Rick Dom. The MS-14A Gelgoog is the first mass produced Principality of Zeon mobile suit to be equipped with a beam rifle. It was developed by incorporating the Federation's technical data on Energy CAP technology that Zeon obtained via Side 6. Its power rivals the beam rifle used by the RX-78-2 Gundam. While the Gelgoog was the most powerful production-type MS of the One Year War by a considerable margin, matching or slightly exceeding the Earth Federation's RX-78-2 Gundam unit, it was never produced in the numbers required to counter the sheer numbers of RGM-79 GMs that walked off the production lines before the end of the war. The MS IGLOO Gelgoog are equipped with an easy to retrofit, modular booster pack on its back for increased speed. This modification can be applied to both the prototype and standard mass-production Gelgoogs, boosting their thrust by around 30%.

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