Names：

Guntank

（RX-75）（RX-75-4）
Status： MS of E.F.F
Tags： Mobile SuitEarth Federation Forces (U.C.)Prototype13th Autonomous CorpsTank
Development： GuncannonGround Assault Type GuntankGuntank IILoto
Affiliation： 13th Autonomous Corps
Mass Production： Guntank Mass Production Type
Control： Hayato KobayashiRyu Jose
Original Design： Suikyou GuntankGuntank (GRX-75)Priest GuntankGuntankNossori GuntankTank Machine Soldier Tankgun
World： the World of Mobile Soldiers
Works： Mobile Suit GundamUniversal Century Series
LeveL： B

The RX-75 Guntank was the first prototype Earth Federation Forces mobile suit developed by Operation V. However, it was said to be closer to a tank rather than a mobile suit. A number of companies such as Takim and Hervic participated in its development. The Guntank had the torso and arms of a mobile suit, but possessed caterpillar treads for legs. Initially, it was designed to be piloted by a crew of two, with a gunner in the canopy-style cockpit on the head and a driver in another cockpit in the torso. However, it was later changed to be controlled by a single pilot in the canopy-style cockpit. Like all "Operation V" mobile suits, the Guntank used the Core Block System.

Its reactor is a hybrid type of nuclear reactors and gas turbines, and its output is insufficient for powering beam weapons. The Guntank's main weapons are twin 120mm cannons, which are effective at long and medium ranges. Its arms have four-barrel missile launchers instead of hands, and they provided good cover fire against enemy tanks and aircraft, but are less effective against enemy mobile suits.

The RX-75 Guntank was the first prototype Earth Federation Forces mobile suit developed by Operation V. However, it was said to be closer to a tank rather than a mobile suit. A number of companies such as Takim and Hervic participated in its development. The Guntank had the torso and arms of a mobile suit, but possessed caterpillar treads for legs. Initially, it was designed to be piloted by a crew of two, with a gunner in the canopy-style cockpit on the head and a driver in another cockpit in the torso. However, it was later changed to be controlled by a single pilot in the canopy-style cockpit. Like all "Operation V" mobile suits, the Guntank used the Core Block System.

Its reactor is a hybrid type of nuclear reactors and gas turbines, and its output is insufficient for powering beam weapons. The Guntank's main weapons are twin 120mm cannons, which are effective at long and medium ranges. Its arms have four-barrel missile launchers instead of hands, and they provided good cover fire against enemy tanks and aircraft, but are less effective against enemy mobile suits.