The Brugger & Thomet MP9 submachine gun is a further development of the Austrian Steyr TMP. In 2001 Steyr stopped production of the TMP and sold production licenses to the Swiss arms manufacturer because the lack of sales. Swiss arms designers made over 19 engineering changes to this weapon. Production of the MP9 commenced in 2004. Currently this submachine gun is in service with Switzerland, India and Portugal.
The Brugger & Thomet MP9 is a recoil operated, selective fire weapon, which fires from closed bolt. This submachine gun is chambered for the standard 9 x 19 mm ammunition. It is worth mentioning that the Brugger & Thomet SMG is smaller than the HK MP5 or similar designs, however this weapon offers more controllable fire than automatic pistols. It falls in the same niche as the Mini Uzi and Ingram MAC-10. It’s compact size and light weight make this weapon suitable for law enforcement teams and special units, however it looses to bigger SMGs in terms of range. This weapon has an effective range of about 50 – 100 meters.