There are no ways I would check in my Leica or Swarovski, bring them with you and they would treated like camera lens.
I got flagged at Halifax airport for bringing two glock 19 barrel in my check in, bought them from Noric Markaman for a good price while visiting family there.
Porter airline asked me to fill a form and keep asking if I have a license for that. In the form, they asked me to check the boxes that apply to the items that I declared, there aren't any boxes indicating about firearms parts, Lol. The lady keep insisting me to check the firearms box since they are all the same, Lol. What a hassle.