The Steyr TMP (Tactical Machine Pistol) is a select-fire 9x19mm Parabellum caliber machine pistol manufactured by the Austrian company, Steyr Mannlicher. It is renowned for its controllability, allowing a shooter to accurately fire the gun in bursts of up to 15 or 30 (the full magazine size), instead of the typical 3-shot or 2-shot bursts that other submachine guns are limited to. Magazines come in 15/30 round detachable box types. A suppressor can be also fitted. The Steyr SPP is the civilian variant of the TMP which has no foregrip and is capable of semi-automatic fire only.
In 2001, Steyr sold the design to Brügger & Thomet who developed it into the Brügger & Thomet MP9. It adds a Picatinny rail and a folding buttstock.