Express Infrared Krestrel is a custom weapon build name, which you get by customizing a Receiver with exchangeable parts. Several weapon builds made up of different parts may bear the same name. If you own a weapon with this name but don't see its exact combination of items here, please post a screenshot that shows the name and components used to construct it.

The Express Infrared Krestrel is a high level build of Heavy Assault Rifle for advanced players.

BLR wiki - HAR build (edited)

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