https://www.theblaze.com/news/chicago-shootings-weekend-machine-guns-video
CWB Chicago reported, "The offenders whose guns generated
automatic fire were likely using handguns equipped with
'Glock switches,' illegal after-market devices that enable
semi-automatic pistols to fire more than one round with a
single trigger pull. The devices are prohibited under
state and federal laws."
The shooting killed 14-year-old Pierre Johnson after he
was shot in the chest. Two men, ages 18 and 19, were
critically wounded. A 21-year-old man was shot in the hand.
. . .