In a 3D look - change of a corner of weapon doesn't work for action of keys:
- Gun Elevation Up
- Gun Elevation Down
In the early version Arma3, Up and Down were carried out in 3D.
I can't remember the version of a game when it worked.
Now it works only when you look in the riflescope.
https://youtu.be/j8t8xWkkXkQ