Because you're not wearing a tin foil beanie. Therefore you are susceptible to 5.7x28 brain waves AND it's a damn good weapon.
One of those in a water boo beltslide holster and Santa would give up the whole sleigh full of presents with no questions asked.
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And seriously.
The 5.7 is in service now with military and police forces in over 40 nations, including Canada, France, Spain, Greece, India, Poland, and the U.S., including the U.S. Secret Service, some Navy Seals units, and the Federal Protective Service. The internal hammer of the SAO 5.7 is NOT a striker like some claim, but is always cocked when there is a round in the chamber.