Before the end, the Steyr TMP only found customers in EKO Cobra of Austria and Gruppo di Intervento Speciale of Italy - both representing national special forces groups. Its rights were then sold off in 2001 to Brugger & Thomet who continued the design as the MP9 Machine Pistol (detailed elsewhere on this site) of 2004. The Steyr SPP ("Special Purpose Pistol") became an offshoot of the TMP and added a semi-automatic fire function to the mix as well as long barrel and forend to the receiver. The SPP also lost the TMP's forward grip.
The TMP weighed in at 3lb when empty and featured a running length of 11 inches with a barrel measuring just over 5 inches long. The action was centered around a short-recoil system with locking, rotating barrel movement set about the delayed blowback principle. Rate-of-fire reached up to 900 rounds-per-minute with the rate being selectable by the operator and muzzle velocity was in the vicinity of 1,315 feet-per-second wit effective ranges out to 100 meters. A forward grip was added to help control muzzle climb and this, in turn, necessitated the inclusion of a small solid protrusion ahead of the foregrip to help protect the firer's hand from crossing over in front of the active muzzle. Iron sights were fitted across the top of the receiver in the traditional way and the magazines inserted into the pistol grip's base.
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