Model number: RX-77-2
Code name: Guncannon
Unit type: prototype artillery mobile suit
Manufacturer: Earth Federation Forces "Project V"
Operator: Earth Federation Forces
Rollout: UC 0079
First deployment: September UC 0079
Accommodation: pilot only, in standard cockpit in torso with Core Block System using FF-X7 Core Fighter
Dimensions: overall height 18.1 meters; head height 17.5 meters
Weight: empty 51.0 metric tons; max gross 70.0 metric tons
Armor materials: lunar titanium alloy
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 1380 kW
Propulsion: rocket thrusters: 2 x 22600 kg, 4 x 1650 kg
Performance: maximum thruster acceleration 0.74 G; 180-degree turn time 2.0 seconds; maximum ground running speed 78 km/h
Equipment and design features: sensors, range 6000 meters
Fixed armaments: 2 x 60mm vulcan gun, fire-linked, mounted in head; 2 x 240mm cannon, variable independent-fire/fire-linked, 20 round magazine each, mounted over shoulders
Optional fixed armaments: 2 x spray missile launcher, mounted over shoulders in place of 240mm cannons
Optional hand armaments: BOWA·XBR-L beam rifle, powered by rechargeable energy cap
The second of three mobile suit prototypes built under the Earth Federation Forces' "Project V" during the One Year War, the RX-77-2 Guncannon is a step above the RX-75 Guntank in that it's a true mobile suit and not just a "mobile suit body on a tank." Like its brethren Guntank and RX-78-2 Gundam, the Guncannon uses the same FF-X7 Core Fighter as an escape system for the pilot. Also like the Gundam, the Guncannon is one of the first mobile suits to use the energy cap-based beam rifle, as well as head-mounted vulcan guns for close range defense. However, the Guncannon is designed as a mid-range fire support unit, and its primary armament is its shoulder-mounted 240mm cannons. The main drawback to this is the cannons' limited ammunition supply, but an experienced pilot learns to use the ammo conservatively and effectively to stay in battle longer (as Guncannon pilot Kai Shiden has to learn the hard way).
Initially, only one RX-77-2 survives a Zeon attack on the Side 7 research colony when Project V is uncovered by Zeon ace pilot Char Aznable, and this unit is transferred to the assault carrier White Base, where it continues to serve until the end of the war. A second Guncannon unit is later pieced together and added to White Base's mobile suit complement, with the two units designated "C-108" and "C-109," both of which are destroyed at A Baoa Qu. Aside from the original Guncannon, the Federation Forces also creates a modified mass production version, the RX-77D. At the same time, the Federation Forces combine the mid-range fire support concept of the Guncannon with the RGM-79D GM, with the result being the RGC-80 GM Cannon. The GM Cannon is followed by a post-war successor unit, the RGC-83 GM Cannon II.
Pilot(s): Kai Shiden, Hayato Kobayashi, Amuro Ray, Ryu Jose
Appearances: Mobile Suit Gundam; Mobile Suit Gundam: Outer Gundam; Mobile Suit Gundam Side Story: MS Generation; Mobile Suit Gundam: Cross Dimension 0079; Gundam Tactics Mobility Fleet 0079; Mobile Suit Gundam: Federation VS Zeon DX; Mobile Suit Gundam 0079: Zeonic Front; Mobile Suit Gundam: Lost War Chronicles; Mobile Suit Gundam: Journey to Jaburo; Gundam the Ride: A Baoa Qu; Mobile Suit Gundam Side Story: From Place Beyond the Blaze; Mobile Suit Gundam: Encounters in Space; Mobile Suit Gundam Ex Revue; Gundam 0079: The War for Earth; Mobile Suit Gundam: Bonds of the Battlefield; Mobile Suit Gundam: Target in Sight; Mobile Suit Gundam: Pilot's Locus; Mobile Suit Gundam: Spirits of Zeon ~Dual Stars of Carnage~; Gundam Evolve; Mobile Ops: The One Year War; Mobile Suit Gundam Battlefield Record UC 0081; Mobile Suit Gundam: Gundam Vs. Gundam; Mobile Suit Gundam: Gundam Vs. Gundam Next; Dynasty Warriors: Gundam; Mobile Suit Gundam: Climax U.C.; Gundam Crisis
Original mechanical designer: Kunio Okawara (Mobile Suit Gundam version)