- "Short, compact barrel sacrifices accuracy and range for speed and agility. Improves performance in close quarters encounters."
- — In-game description
The FSS Mini is a barrel attachment featured in Call of Duty: Modern Warfare and Call of Duty: Warzone. It is uniquely available to the MP5 submachine gun.
- With this attachment equipped, the MP5's name changes to "MP5K" in the HUD.