it's not a welred (lawl) or a vp9. the vp9 has rotary bolt action design. you can clearly see the shooter manipulating a slide. it's not an improperly secured suppressor or a shitty gun. he just used subsonic ammo which doesn't leave enough energy to cycle rounds. you can tell by his body language he was expecting to have to manually cycle each round. as opposed to being surprised and panic, trying to pull the trigger multiple times when nothing is happening. he immediately racks the slide after shooting and brings it back on target, 100% aware.
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