The gunman racked his weapon each time he shot... likely because he used a subsonic cartridge. Which is quieter but slower.
Congratulations! you are the first person on the several threads I have looked at who has grasped that simple truth.
Way too many self proclaimed ‘gun experts’ have been saying that it was an amateur thug with a malfunctioning gun. I say it was a pro who knew well in advance that he would have to rack the slide every time, and had practiced it.
Which is quieter but slower (i.e. less powerful), hence does not have the excess energy needed to cycle the action.
Many times a subsonic round turns a semiautomatic weapon into a single shot weapon, the price of the suppressed shot.
This will also light up our buddies at the BATF&E - that a suppressed weapon was used in a crime.
“The gunman racked his weapon each time he shot... likely because he used a subsonic cartridge. Which is quieter but slower. “
Who ever that guy was he knew what he was doing.
The weapon looks like a welrod. A welrod needs to be chambered manually after each shot.