I think the customs action is deplorable, ill conceived and will eventually be proven wrong.
I've said for a long time that , by the letter of the law, even a boyscout knife with a broken backspring COULD be declared a "gravity" knife and as such a violation. I don't know a judge in the country that would prosecute but it is "the law" and CAN BE enforced no matter how silly it might seem.
I recently had a bout with customs on some steril leverlocks. They siezed them without checking to see if they had springs in them, which they did not. I argued that , without springs, they were no more than lever locking pocket knives because this model does have a thumb knick.
I thought my plea would fall on deaf ears but to my amazement I received a "hold harmless form" to sign, insulating them from any damages, and received my knifes back.
The scarry part of the law, both customs and the 1958 SBR act, is that it CAN be enforced at any law enforcement personel's PERSONAL discretion.
We all know that by the absolute "letter of the law" 75% of all folding knives could fall into that gray area of an "automatic", "gravity" or "inertia" opening knife. Are they going to raid every K-mart, Walmart, Target, sporting goods store etc.??
This may seem like a bad thing right now but it may give the knife industry a crack at getting some of these antiquated, ill- conceived, useless and largely unenforced "laws" off of the books. Let's hope this is the case.
Why I can legally carry a sheath knife, witch is stronger, quicker and quieter than any automatic knife, with impunity, just makes no GOOD sense.
In some states even POLICE OFFICERS cannot carry an automatic knife!!
Give us all a break.