Excellent point. I was wondering about that after I'd made the recommendation. Of course make sure all blades are in checked-in luggage and not on your person when flying. I would think the "tightened" mini-RSK would be OK in customs, but you can't go too wrong with a good SAK.

If it helps, the pivot screw is a Torx T10. The clip screws are Torx T6.

Also don't forget that the Ritter PSP has a scalpel blade, hooks, pins ... in it. The PSP should be packed in checked luggage too.

The Bic lighter can't go on the plane - buy a lighter locally.