On some SIM card holder datasheets, I've seen references to a card stopper feature that prevents users from inserting a SIM card incorrectly. This card stopper appears to be a mechanical feature built into the body of the SIM card holder itself. Example on page 4:
The detail drawing for Molex 5039600695 also refers to a card stopper. However, this particular datasheet indicates that the card stopper is 1.4mm away from the body of the SIM card holder. I am not sure how to interpret this recommended card stopper position. I understand the idea of a card stopper as a mechanical feature of the SIM holder, but not in this context of something separated from the SIM holder.
In this case, is the card stopper a distinct component from the 5039600695 SIM card holder that would need to be purchased separately?