|Full text name||Steyr TMP|
|Caliber cartridge||9x19 Luger / Parabellum|
|Overall length, mm||282|
|Weight empty, kg||1.3|
|Magazine capacity, rounds||15, 30|
|Cyclic rate of fire, rounds/min||800-900|
Steyr TMP is a modern compact SMG. It is blowback operated, locked breech design, with rotating barrel. This mean that after the shot bolt with barrel locked to it are moving backward for some 4 millimeters. Then, the barrel rotates clockwise slightly, and thus unlocks the bolt. Rotaton controls via small cam on the barrel that follows the spiral groove inside the receiver.
Both upper and lower receiver are made from polymer. TMP has no stock and could be fired only from off-hand position.
Safeties featured automatic off-battery safety, drop safety and the manual safety switch.
TMP is reported as a very controllable and comfortable to fire firearm.