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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

"10.4 inch stainless steel barrel with polygonal rifling increases muzzle velocity and improves range with little additional weight."
— In-game description

The FSS 10.6" Pro is a barrel attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone. It is uniquely available to the P90 submachine gun.