The Horde Breaker is a Weapon Blueprint available in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is a blueprint variant of the base weapon 556 Icarus, one of the LMGs featured in Call of Duty Modern Warfare 3.
You can find all the attachments for the Modern Warfare 3 and Warzone 2 Horde Breaker Blueprint listed below.
Here are the attachments for the Horde Breaker Blueprint featured in Call of Duty: Modern Warfare 3 and Call of Duty: Warzone 2.
You can build your own Horde Breaker weapon Blueprint by adding these attachments on a base in the Gunsmith menu.
To unlock the Horde Breaker Blueprint in Warzone 2 and Modern Warfare 3 you need to complete the DMZ Mission "Pathfinder".