Specialised firearms which are excellant for dignitary protection. Small, concealable, extremely high rate of fire and controllable if the operator takes the time to practice and master it. Strictly close in work unlike the over 100 yard capability of the MP5 in 40 or 10mm.
Worked with an ex-soviet naval infantryman who became persona non grata prior to the collaspe and is now American in heart. Having worked dignitary protection (for some socialist swine in the Ukraine), he also concurs in its application of machine pistols.