The sight line is sandwiched and is highly dependent on the terrain relief, the position of the body - lying.
It is, in most cases, makes it difficult to apply the provisions of choice Bipod, in the problems of the sector precise shooting.
https://youtu.be/HVAnjlbhHNI
https://youtu.be/HGdfBo50m6o
Forum https://forums.bistudio.com/topic/192354-bipod-make-this-work/