纽约united healthcare CEO杀手的消音手枪为何cycle不正常?

手枪变成单打一,是因为没有nielsen device吗?
这杀手看起来挺专业的,为什么会犯这种错误呢?难道是自制简易消?
有人说是为了收集弹壳,但是看动作弹壳还是会掉在地上,杀手也没有去捡
https://www.reddit.com/r/interestingasfuck/comments/1h6v27d/video_footage_of_unitedhealthcare_ceo_brian/

好像就是栓动的B&T

By the way the gunman manually re-cocks his weapon after each shot, he says it appears that he “anticipated the weapon would fail to function as normal, possibly due to the use of subsonic ammunition in combination with a suppressor”.

显然不是专业杀手. 杀人前去starbucks买东东, 把口罩脱下来了. 结果脸被拍下来了. 他明明可以一直带着的.

应该是没有装nielsen device所以cycle不动,我看开枪后slide都没有动