The Resonance Stock Collapsed is a weapon attachment featured in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is one of the Stock attachments available in MW3.
The Resonance Stock Collapsed is a Weapons Platform Specific Attachment, which means it is only usable within its specific Weapons Platform.
Here's how to unlock the Resonance Stock Collapsed attachments in COD Modern Warfare 3 and COD Warzone 2: Get the Expedite 12 to Level 10.
Here you can find the list of Weapon Blueprints that include the Resonance Stock Collapsed attachment in COD Modern Warfare 3 and COD Warzone 2: