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 duty stainless steel polygonal rifled barrel greatly increases muzzle velocity and extends range to the max. Additional weight stabilizes shots, but affects mobility."
— In-game description

The FSS Carbine Pro (formerly named FSS Orion) is a barrel attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone. It is uniquely available to the Uzi submachine gun.

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