bryan said...
weapons can travel as unaccompanied luggage.
2 friends of mine few years ago, got to the airport in France and had forgotten their "Opinel" picnic knifes in their bags. The guy at the security did the same, labelled them and sent them separate.
To their surprise (in Melbourne) their knifes turned out... turning on the baggage carrousel, just there on the mat, no box, no envelopes...