The Under Fire / Heat Sink is a Weapon Blueprint available in Call of Duty: Vanguard and Call of Duty: Warzone Pacific.

It is a Legendary blueprint variant of the base weapon STG44, one of the Assault Rifles featured in Call of Duty.

The Under Fire / Heat Sink blueprint was released in Season 1 (VG) as part of the Bundle Cauldron.

Blueprint Info

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  • Under Fire / Heat Sink Blueprint Attachments:


    Cauldron Bundle Blueprints:

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