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

"Heavy weight forced-air-cooled barrel slightly increases muzzle velocity and improves range."
— In-game description

The 25.9" Heavy Barrel is a barrel attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone. It is uniquely available to the PKM light machine gun.

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