Are those modified hand guns? I never seen a hand gun that shoots like that unless they are using something like a Tec-9? It doesn’t look like that though. This is crazy, then they come back to finish the job nobody helps them inside. Almost as violent as leftist run Chicago or NYC. NYC now every day there are killings, every-single- day. Here is todays.......
https://nypost.com/2021/12/14/nyc-deli-worker-fatally-shot-during-attempted-robbery/
There are quite a few machine pistols but those are probably glock 18’s which have a FA selector switch.
I doubt that it is the case here but with substantial practice an experienced shooter with a semi auto is almost indistinguishable from full auto
Buddy timed me firing 14 rounds in less than 3/4 of a second regularly as well as 6 out of a 357 revolver in 5/8 second. It sounds different first few times you hear it.