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The subject of this article appears in Call of Duty: Modern Warfare (2019) The subject of this article appears in Call of Duty: Warzone

"Custom 21.2" heavyweight barrel with polygonal rifling slightly increases muzzle velocity and extends range with little additional weight."
— In-game description

The Singuard Custom 21.2" is a barrel attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone. It is uniquely available to the Kar98k marksman rifle.

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