Originally Posted by Cassius
Scopes and optics are not prohibited.
They may be export prohibited from the U.S., depending on make, model, etc. That is a U.S. issue, and has nothing to do with the CBSA, but the end result may still be the same, you have no optics and they are stopped at the border.
Order those things directly from Asia, Europe or from in Canada, and avoid ordering directly from the U.S..