FAKE.
I think you are gullible if you believe it. I see the alleged Chinese marksmen use unsupported shooting stances as well as a more supported kneeling position. I get the feeling that the cameraman/director is telling the "soldiers" how to pose. Obvious propaganda by the Chinese to show their "fearless" and "deadly" soldiers.
It looks like a laughable fake setup to me. I watched the video and the apple at the 1:30 mark sprays from behind and somehow doesn't fall off the helmet!!! I also noticed that the apples gently fell off sideways from the helmets. Any fruit that I have ever seen shot is blown to smithereens. Perhaps the Chinese have invented ammo that cannot blow up apples. I suppose that means it won't seriously wound any American soldier, so that's good. LOL
It's either that, or Chinese apples are fucking tough.