MS-14Jg Gelgoog Jäger

An upgraded model of the Gelgoog under United Maintenance Plan, one of Zeon's attempts to simplify both construction and operation of their Mobile Suits. The MS-14Jg Gelgoog Jäger, or simply Gelgoog J, featured more powerful thrusters and additional verniers. To offset the increased propellant use, it also carried a pair of large external propellant tanks on the backpack. It was primarily armed with a large beam machine gun that boasted high accuracy (in fact, the Jäger was nicknamed the Gelgoog Sniper). Like other later model Zeon Mobile Suits, it was also capable of carrying other Zeon weaponry such as the powerful bazooka or MMP-80 machine-gun. It was more than a match for the EFSF's GMs and other mass-production units. Several were used in minor skirmishes in the Side 6 area.

In a what-if scenario in the video game Mobile Suit Gundam: Encounters in Space, the infamous "White Wolf of Solomon" Shin Matsunaga receives a customized white Gelgoog Jäger and fights at the Battle of A Baoa Qu. In reality, he had been recalled to Side-3 since before the Battle of Solomon and was not present at A Baoa Qu (his own customised Zaku was discovered in Solomon by the Federals and destroyed). However, considering that Zeon often assigned powerful units such as the Jäger to their best pilots, it is not difficult to imagine the feared ace being assigned one but not have the chance to use it.