The Brugger & Thomet MP-9 of Switzerland is a tactical machine pistol often used in PDW or personal defense weapon situation. The weapon uses 9 x 19 mm Parabellum ammunition.
There is also a semi-auto variant of the MP-9 called the TP-9. The MP-9 is developed based on the model Steyr TMP. The main difference between the TMP and the MP-9 is a stock on the MP-9 that folds to the right side of the weapon. The weapon also includes an integrated Picatinny rail.