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The RX-77-3 Guncannon Heavy Custom was a medium-range support mobile suit used by the Earth Federation Forces. It was introduced in Mobile Suit Variation.

Technology & Combat Characteristics[]

Following the development of the RGC-80 GM Cannon, a mass production variant of the RX-77-2 Guncannon, the Federation continued its development of medium-range support mobile suits. Based on the combat data of the RX-77-2, the Federation developed the RX-77-3 Guncannon Heavy Custom.[1]

Compared to its predecessor, the RX-77-3 omitted the Core Block System and featured improved armor, reduced recoil, increased payload, rate of fire, and reloading speed. Its backpack output was also increased in an attempt to improve its mobility. However, it was said that its weight was more than its basic design could support, hindering its mobility. In addition, while it was intended to be able to operate in both group and solo combat, its solo operation capability was said to be lacking.[2][3][4]

Despite the RX-77-3's improvements, the recoil of its ballistic cannons were still an issue. In order to solve the problem completely, some test units had their cannons replaced with a single beam cannon for trial purposes.[1] Several of these test units would later be converted into RX-77-4 Guncannon II.[5] Overall, only a small number of RX-77-3 were produced. Units that continued to be deployed after the One Year War were eventually retrofitted with a panoramic cockpit monitor, etc.[6]

Armaments[]

  • 60mm Vulcan Gun
A pair of shell-firing armament built into the head. Low offensive power, only used to restrict enemy movement, and lay down a wall of suppressive fire due to their rapid-fire capability.
  • 240mm Cannon
Like the original Guncannon, the Guncannon Heavy Custom's main weapon is a pair of shoulder-mounted 240mm cannons. However, the Guncannon Heavy Custom's cannons have better offensive power due to a higher rate of fire and a better ammunition feed system. The recoil during firing has also been reduced, and although this issue is not completely eliminated, it does not cause much problem during practical use.
  • Beam Cannon
Instead of the shoulder mounted cannons, the Guncannon Heavy Custom can be fitted with the same beam cannon and targeting unit as the RX-77-4 Guncannon II.
  • XBR-M-79a Beam Rifle
The Guncannon Heavy Custom can use the same beam rifle as the RX-77-2 Guncannon. This particular beam rifle is specialized for sniping. Compared to the beam rifle used by the RX-78-2 Gundam, it was harder to use but had higher accuracy and longer range. It is said to have a range of around 30km.
  • BOWA·BR-S-85-C2 Beam Rifle
The same weapon as used by RMS-179 GM II, it has a power rating of 1.9 MW and is powered by a built-in energy CAP system. This beam rifle was used by the Guncannon Heavy Customs stationed in Jaburo during the Gryps War.
  • Hand Grenade
The Guncannon Heavy Custom has an unknown number of hand grenades stored in a rack on its left side armor. Various types of hand grenades can be stored.

History[]

During the early part of the Gryps War in U.C. 0087, at least one Guncannon Heavy Custom was known to have participated in the defense of the Earth Federation's Jaburo base. In the manga Mobile Suit Zeta Gundam Define, Kai Shiden would use a Guncannon Heavy Custom he found in a MS hangar to escape from Jaburo base.

Variants[]

Gallery[]

Anime[]

Manga[]

Illustration & Artwork[]

Game[]

References[]

  1. 1.0 1.1 (2006-07-26) 〈復刻版〉機動戦士ガンダムモビルスーツバリエーション (3) 連邦軍編 (in Japanese). 講談社編 [Kodansha], pp. 77-78. ISBN 9784063721775. 
  2. (2006-07-26) 〈復刻版〉機動戦士ガンダムモビルスーツバリエーション (3) 連邦軍編 (in Japanese). 講談社編 [Kodansha], p. 6. ISBN 9784063721775. 
  3. MSV RX-77-4 Guncannon II (1984) instruction manual
  4. (2009-02-25) 電撃データコレクション THE BEST 機動戦士Zガンダム大全 [Dengeki Data Collection THE BEST - Mobile Suit Zeta Gundam Complete Guide] (in Japanese). Dengeki Hobby Magazine Editorial Department, p. 94. ISBN 9784048676441. 
  5. Kodansha Pocket Card 9 - Mobile Suit Gundam MSV Collection (1984)
  6. Gundam Mobile Suit Bible Vol. 35 RX-77 Guncannon (2020), p.11

External Links[]


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