Full auto is of dubious value for LE, but, yeah, 9mm? Welcome to the 1980’s!
The recent trend in American law enforcement is going back to the 9mm from the .40 S&W if you weren’t aware.
You can pick up .40 Glock 23 police trade-ins for a song these days, and still nobody’s interested.
What’s old is new again, I guess. The bastard caliber .40 S&W round is finally going kerplop.
Hey, Mossad and others use .22’s for their ‘work’.