Is this what they are going with???
"On October 1, 2017, a shooter attacked a large crowd attending an outdoor concert in Las Vegas, Nevada. By using several AR-type rifles with attached bump-stock-type devices, the shooter was able to fire several hundred rounds of ammunition in a short period of time, killing 58 people and injuring over 800."
I say BS. The shots on the Vegas vids were not a bump stock. The rof was way too slow. Am I wrong? The only knowledge I have of bump stocks is from seeing someone shoot them on youtube but in every one the rof was much faster than the audio in the Las Vegas vids.