Here i provide you several alterntive for the AI "stand ready" animation, when the AI is waiting (this animation is never used by the player, only the AI)

Select the folder according to what you want, and replace files of the same names inside of the Anim.pbo.

The "stand ready" animations files are interpolated by OFP itself, so you can use any stand ready file from any anim pack without a problem

see screenshots in each folders

