Welcome to the 405th Donut! If you check the armory, under the Halo 4 section, there's a link to the set of Mjolnir Mk VI Multiplayer files. There's Pepakura files, foam files as well as 3D files. Haven't checked the model myself but one of the reviews says the armour is detailed.
This is a comprehensive zip file including numerous files from multiple artists. Contents of zip-file: halo-4-mjolnir-gen2-mark-vi-multiplayer-edition-boot-right.pdo Modeler: AZTLAN Unfolder: NoMaybeYes...
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