Small caliber, still deadly.....May be a 'last line of defence' weapon, but not needed against unarmed protesters!....?????
Hmmm, Could also be a firearm carried by the mercenaries to 'plant' at any scene in which they may have perpetrated another heinous crime. They can then, after falsifying evidence, claim their atrocities were justified. Preplanning their next crime....I think that is called premeditated criminality!