The MS-14JG Gelgoog Jäger is a mobile suit introduced in Mobile Suit Gundam 0080: War in the Pocket.

A variation of the MS-14 Gelgoog, the MS-14JG was specialized for precision firing mission, and was also known as "Gelgoog Sniper Type". It was designed with the United Maintenance Plan (UMP) in mind, greatly increasing its specifications and ease of piloting, as well as simplifying its manufacturing process and improving the interchangeability of its parts with other models.

The Gelgoog Jäger was equipped with a total of 24 posture control sub-thrusters in addition to the main thrusters, significantly improving its mobility in space. Due to its nature as a sniper unit, its monoeye has a larger field of vision than standard units. In addition, since it was designed as a commander unit, it was equipped with a head-mounted blade antenna by default for enhanced communications. Similarly, its backpack had another antenna and a laser communication unit.

The Gelgoog Jäger's primary weapon was a large-sized beam machine gun, which could either fire pulsed beam pellets or a single-shot long-range beam. It was able to use this weapon thanks to a tuned up, new model generator. The beam machine gun's low rate of beam deterioration, combined with its exceptionally accurate scope and the Jäger's latest fire control hardware and software, granted it unparalleled firing accuracy.

As with other UMP mobile suits, the Gelgoog Jäger adopted standard 2nd Phase Production Type cockpit and manipulators, meaning it had the same control scheme as its peers and could use all of their weapons, reducing the required pilot training time for switching models and compensating for Zeon's lack of pilots.