I have a G-17. I consider these “auto sears” a novelty modification for fun and LOLs at the range. I’d never use it for serious use. I’d prefer 2-3 accurate shots rather than 15 spray and pray. That gang-bangers actually use them on the streets isn’t the least bit surprising, since they’re low IQ and entirely unskilled.
Years and years ago, before I belonged to a Sportsman's club I used to go to a gun range run by the game commission. Some hood rat pulled up in his pimped out ghetto mobile with his ho in the passenger seat. He jumped out, walked directly on a live range, hanged a target and walked back - not to the firing line, but about 5 meters. He held his semi-auto above his head with the ejector port pointed straight up and elbow slightly bend, then unloaded his weapon spraying hot brass in his nappy hair and down his collar.
I'm not afraid of these thugs when I am armed.
Did you see that video of the drive-by gang shooting in Puerto Rico last month or so? Several of these "Glock 18" pistols were used - to horrific effect. These modified handguns are as capable as Uzis, Mac-10s and pretty much any other pistol-type submachinegun. Spraying lead is what they are intended to do; just a bit of practice is needed. They are certainly getting lots of practice.
The bigger issue, though, is the source of these gadgets. Most appear to be coming from China by the thousands, so it looks like another "create internal political division and upheaval" operation from Joe's ChiCom buddies.
One of my favorite handguns is a Taurus 45 ACP. Last shoot I went to. 10 shots in 10 seconds I hit 8 head shots at 25 yards. Full autos are a waste of shells. My long guns are either lever action or bolt. You only need one bullet to hit a target.