HG 1/144 G-Armor

The G-Armor is the combined form of the RX-78-2 Gundam with both parts of the the G-Fighter. Due to the G-Armor's ability to quickly deploy the Gundam after transporting the mobile suit, it is the most used combined configuration of the G-Fighter and Gundam.

The G-Armor was the result of the Gundam combining with both the A-Parts and B-Parts of the G-Fighter. In this form, the G-Fighter's tank treads connected the A-Parts and B-Parts so that energy could travel between the two. After combination, movement and weapons were controlled from the G-Fighter's cockpit, though during the G-Armor's first appearance the Gundam's cockpit carried out fire control. Because its waist and arms were exposed, two of the Gundam's shields were mounted to its arms to protect both sides of the G-Armor. The Gundam can be released from the G-Armor in a process known as Bolt Out, during which the A-Parts and B-Parts separated from the mobile suit before automatically recombining into the G-Fighter. The shield on the right arm was originally discarded when this was done, but after a proposal by Amuro Ray, a special joint was implemented so that it could be mounted over the top of the shield on the left arm.

Lore excerpt from gundam.fandom.com.