The High Grade the Witch from Mercury (HGTWFM) X-EX01 Gundam Calibarn is a 1/144 scale kit released in 2023.
Gunpla Manual
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RX-77-02 Guncannon will be making its debut in the High Grade 1/144 scale GunPla series soon! Not only that, the kit was also announced to be released as a regular retail model kit.