The Holger 556 is an assault rifle available in Call of Duty: Modern Warfare 3 (2023) and Warzone.
After some extensive testing, we have found the best Modern Warfare 3 Holger 556 attachments to use in multiplayer:
For a boost in bullet velocity and range, the Chiros-6 Match barrel is an excellent choice. For even more damage range and faster bullet velocity, the 5.56 NATO High Grain Rounds guarantee a fast time to kill.
To tame the recoil of the Holger 556, the Morn-20 Grip improves flinch resistance and any additional kick produced by the rifle.
Lastly is the Slate Reflector optic. This particular sight provides a crystal-clear view of anything that moves into your crosshair.