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High Caliber is an attachment featured in Call of Duty: Black Ops III and Call of Duty: WWII that increases headshot damage.

Call of Duty: Black Ops IIIEdit

High Caliber menu icon BO3
High Caliber
Unlocked Weapon level 7 (ARs/Handguns)
Used by All teams
Console codename(s) +damage

It can only be attached on Pistols or Assault Rifles, and increases the headshot damage multiplier of any gun it's attached to from 1.1 to 1.5, except on the Sheiva and MX Garand.

These two weapons are two of the guns that get the most benefit from the attachment, as it changes the guns from a two shot kill to a one shot headshot. This is achieved thanks to the unique increase both weapons gain, a 1.8 headshot multiplier (if they got a 1.5 multiplier, the attachment would make no difference).

It is a more effective attachment for Burst Fire and high-recoil weapons. Burst fire weapons greatly benefit if any of the three or four rounds hit the head of the opponent, and high-recoil weapons will direct their rounds upwards and towards the head, meaning the last of the shots fired are more likely to guarantee a kill.

Call of Duty: WWIIEdit

High Caliber menu icon WWII
High Caliber
Used by All teams
"Increases head shot damage."
— Description

High Caliber returns in Call of Duty: WWII.