6MM06 is exactly correct. Many Digital, Night Vision, and Thermal scopes provide the ability to have multiple profiles for different guns, different loads, and even different distance profiles. This allows for the same scope to be used not only for different guns but also for different purposes.
Due to this, I now have QD mounts on 3 of my glass scopes as well because I want to be able to put a glass scope back on when the gun is not being used for thermal, digital, or night vision use. Each of these 3 guns has a purpose such as rabbits at night in my back yard vs coyote hunting, etc.