"Unscrew that using a strap wrench or something non-marring. Do this with the scope at max magnification.No offence - you confirmed that the scope has an adjustable objective. That adjustment moves the front lens back and forth to change the parallax setting.. No need to try to remove the whole bell, with or without a strap wrench.
You will need to be careful not to unscrew the lens carrier while you are doing this. If the lens carrier is coming out with the ring, then you will need to use the two slots that you can see inside the outer housing of the objective lens. You can probably find a piece of metal that will fit just inside the objective and slide into those slots to act as counter rotation.
Once that ring is off, you should then have the lens carrier exposed. It should smoothly screw in or out, kind of like the ocular focus at the other end. Do not take this piece out."
Its adjustable in a sense, but not how you think. Its set at the factory around 100 to 150 yards and generally not field adjustable


















































