7,678 Pages

This article is in need of detailed Armaments descriptions.

RX-77-3 Guncannon Heavy Arms Type




Unit Type

Limited Production Artillery Mobile Suit




Model Number
  • RX-77-3
Developed from
Developed into
First Seen
Last Seen

General Characteristics

Overall Height
  • 18.1 meters
    59.383 ft
    712.598 in
Head Height
  • 17.5 meters
    57.415 ft
    688.976 in
Max Weight
  • 79.1 metric tons
Standard Weight
  • 58.6 metric tons
  • Minovsky Ultracompact Fusion reactor
Power Output
  • 1380 kW
    1,850.61 hp
Sensor Range
  • 6000 meters
    19,685.039 ft


Max Speed
  • 69 km/h
    42.875 mph
Mass Ratio
  • 0.79
Rocket Thrusters
  • 62200 kg
    137,127.488 lb
    68.564 tons
  • 2 x 240mm Cannon
  • Grenade Rack
    • ? x "Fire Nut" Grenade
Optional Equipment
  • BAUVA*XBR-L Beam Rifle

The RX-77-3 Guncannon Heavy Arms Type is a variant of the RX-77-2 Guncannon. The Guncannon Heavy Arms Type is an official Mobile Suit Variation.

Technology & Combat Characteristics

The Federation's prototype RX-77 Guncannon was designed as a heavily armed support mobile suit for its' brother units RX-78-2 Gundam and RX-75 Guntank. Over the course of the One Year War, the Federation created variations of the Guncannon to be outfitted for specific roles. The Guncannon was revamped into several designs, one of them being the Guncannon Heavy Arms Type. Although it is simply an external update to a normal Guncannon, it was proven a great success and fielded for combat on Earth. While it retained the head vulcans and beam rifle of the RX-77-2, the RX-77-3 however featured improved armor, updated 240mm Cannons and a new grenade rack.


  • 240mm Cannon
A pair of 240mm cannons are mounted over either shoulder of the Guncannon Heavy Arms type. The mid-range fire support artillery cannon is fed by a twenty (20) round internal magazine located inside the main body of the mobile suit. Each 240 x 800 millimeter shell has a 95 kilogram HE fragmentation warhead, with a casualty radius of 40 meters. Can fire to distances up to 2.5 kilometers. For RX-77-3 Guncannon Heavy Arms type, its shoulder cannons had been improved with reduced recoil during firing and better reloading mechanism which enhanced its artillery performance.
  • 60mm Vulcan Gun
A standard armament of the mobile suits that are descended from the Earth Federation Forces's RX series is a pair of head mounted 60mm vulcan guns. These shell firing weapons have a high-rate of fire but have little power and can't damage the thick armor of a mobile suit, though it can damage lightly armored areas such as the sensors. The weapons are ideal for shooting down small, fast moving, lightly armored targets such as missiles, small land vehicles, and attack helicopters.
  • BAUVA*XBR-L Beam Rifle
The Guncannon Heavy Arms Type can be equipped with a larger and longer-range portable mega particle cannon than the RX-78 GUNDAM. It is powered via an internal energy capacitor with an average charge of fifteen (15) rounds. Each beam is capable of tearing through the medium and heavy armor of enemy MS and MA. Maximum effective range of 2.8 kilometers.
  • "Fire Nut" Grenades
A compact, powerful bomb which can be hand-thrown by Federation's mobile suits. These waist mounted grenades can be thrown like regular grenades and set to detonate upon impact with the target. It is powerful enough to destroy an enemy's mobile suit.


During the early part of the Gryps Conflict in UC 0087, at least one Guncannon Heavy Arms Type was known to have participated in the defense of the Earth Federation's Jaburo base.


Picture Gallery

External Links

Template:Early Universal Century Mobile weapons

Community content is available under CC-BY-SA unless otherwise noted.