Once I made the sales pitch for a Suppressed MAC-11 that if you had a line of ammo bearers following you, you could go into a sold out Oilers game in the Astrodome and the only way the players on the field would know anyone was being taken out was the cheering would get quieter and quieter and quieter and quieter... and quieter...
A couple of decades back I ran an escorting chase car for an armored car service that made deliveries to wholesale diamond distributors and pharmecutical deliveries, among other things, and I got the choice of any vehicle and any weapons I wanted, since mine was a one-person car. Accordingly, one of the tools aboard was an M10, less for its full-auto capability than for magazine capacity; with two 30-round mags taped together it was managable in my left [non-driving] hand, and I could maybe manage a magazine removal and reversal with the short and handy buzzgun. But it did not have the can on the end; I WANTED it obvious if I had to use it- and without the suppressor screwed on, it fit neatly in the car's glove compartment.
Nobody ever tried for one of our shipments while I was *in back with the MAC,* as our uniformed truck crews were fond of referring to it, much to the disappointment of the dealer who had let me have it at his dealer cost, about $188 with a bunch of magazines and accessories.