Well they're outside in the open where gunshots dosen't make you go deaf so I guess it makes sense not to use it because cheap plug works as well as long as you doing shooting outdoors.Probably because the cup earpros quickly get hot and uncomfortable to wear in hot climates and because a lot of people in China still have this baffling attitude that personal safety isn’t a priority.
Personally, I would have suggested that all bases hire one deaf old man as their cleaner so instructors can point to him and tell recruits to protect their ears if they don’t want to be him in 50 years time.


