Made by really talented modeler NG78, this custom Metal Gear Rex is a bit more different than the ones we've seen so far.

It might not be the biggest one, but with a custom built-in gun, it's definitely the most dangerous. The builder shared a few more pics here:

[Kotobukiya] Metal Gear REX Electromagnetic Gun Type Custom! Real 450V Work by NG78 [Gunjap]

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