My Father wanted a Buck knife (6") to carry with him when he goes camping. I thought this would make a good birthday gift. I tried to order one from Bass Pro, but they would not ship a knife longer than 5" into NY or CA. As they explained, they could not ship a "hazardous and/or dangerous" knife (don't remember the exact phrase they used) into those states.
Apparently knives under 5" are not dangerous.
I hesitate to even write this though as someone in those states may realize their error and go all "UK" on their citizens.Dave