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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

"Military issue heavy weight slide provides exceptional stability. Extended barrel with polygonal rifling extends this weapon's range to the max."
Gunsmith description

The Mk1 Extended is a Barrel class attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone.

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