Just made some tests with my rangefinder, and i came across this one:
i was crouched and zoomed in, when i hit F2 (surrender), which caused the camera to follow the scope of the rangefinder, so that it was pointed in the air and making a roll for a moment.
When you put your hand down afterwards, you will enter a position, with your arms pointing to the ground, but will zoom in again, so that you have a nice view of the ground behind you.
I have noticed, that other one handed items are put out of the hand, when surrendering. This would solve this issue for the rangefinder as well.