Correct. Soldiers were issued cases for optics.Think mine comes off without removing though due to PK-A height but I take it off to fold my triangle stock. Can’t rock optic and left side folder. if I’m correct @Jeddak russian manual of arms is to carry optic and weapon folded during transport then deploy stock and add optic for mission
I removed the POSP from my Vepr dozens of times since I zeroed it, and it is still good. Tension on the mount needs to be adjusted first. You need to adjust the tention so it slides on with a Firm push and then the lever tightenes it the remaining 20%.