Reversing system for telescopic sights, and telescopic sight having such a reversing system

A reversing system for telescopic sights has a guide sleeve, an outer sleeve and a mount with an optical element, the outer sleeve being axially fixed and rotatable on the guide sleeve, and an inner cam slot in the guide sleeve, and an outer cam slot in the outer sleeve. The mount is axially displaceable in the guide sleeve and has a guide pin that projects into the inner cam slot and the outer cam slot, the guide pin having a carrier shaft with a first pivot bearing and a second pivot bearing seated thereon. The first pivot bearing is guided within the outer cam slot, and the second pivot bearing is guided within the inner cam slot. The first pivot bearing and/or the second pivot bearing have an inner ring that sits on the carrier shaft and an outer ring that is rotatably supported on the inner ring.