[Mobile Suit Victory Gundam] 1/144 EINERAD: Improved, Painted Build.
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A large wheel, big enough for a smaller MS of late Universal Century era to ride inside and enable flight. The usage of Einerad is much similar to older subflight system, with pair of beam cannon and a 9-tube missile pod as built-in weapons. Unlike typical subflight system, Einerad has notable high defense, its wheel can withstand even beam weapon, make it ineffective to atatck Einerad from front or behind. Although it’s vulnerable from side attack, this can easily cover with beam shield. On other hand, the MS in Einerad can simply charge at enemy and crushing them with Einerad massive wheel. Also different to most subflight system, Einerad can operate underwater as well.
(gundam wikia)
Images: nosutaru