|Please note that this is the Gundam Wiki's article on the mobile suit featured in Mobile Suit Discovery; if you are looking for the article on FA-78-2 Heavy Gundam featured in MS-X then you should head to FA-78-2 Heavy Gundam.|
Design & Development
After completing development on the RX-78-01［FSD］Gundam FSD, two projects were undertaken by the Earth Federation Forces . One was the full mass-production of RX-numbered machines, the other was the expanded weapon system FSWS（Full-armour System and Weapon System）plan. The FSWS plan was to strengthen the RX-78 by increasing armor and weapons, and several fuselage design proposals were considered.
The FA-78-1 Full Armor Gundam type was outfitted with external armor and weapons upon the fuselage, while the FA-78-2 Heavy Gundam itself was a heavy duty armor fuselage. It achieved improvements in armor, firepower, and maneuverability.
- Beam Saber
- A combat armament stored on the backpack, its blade-shaped beam can instantaneously cut through the armor of a mobile suit. The Heavy Gundam only has one beam saber, unlike previous Gundam variants, and the weapon is mounted on its left shoulder when not used.
- Beam Cannon
- Instead of the solid-based left shoulder-mounted cannon on Gundam developed from the RX-78-01 Prototype Gundam, the Heavy Gundam mounts a beam cannon on its right shoulder.