Used to be that way in Florida, too (I, too am a collector with a CHL). 790 F.S. stated that the kind of knife prohibited was one that propelled a blade as a projectile through the force of a spring.
Recently (last year, I think) some dingleberry prosecutor down south in the Enlightened State of Miami decided to split hairs on the definition of that prohibition, and the resulting case law has now made all "autos" illegal to possess, carry, and/or own (except of course by military or LEO).
I've dealt with LEO's a lot in my past. Most of the time they thought the knife was pretty cool (we ended up a show-and-tell...a lot of officers carry 'em down here) and most never gave me a hassle because 1) I usually was on duty, wearing a badge of some kind, security or Bail, and 2) I was wearing a gun. Used to be, the GUN is your weapon, the knife is a rescue tool. Especially in Armored, where you only have one hand free, the other holding your liability. I was never harrassed about it.
But after that case...my switchblade collection? Gone. Put away. Never to be seen again until either I move to another state or the case law changes.
In many cases, one-handed thumb-stud openers, lever-assisted, loose gravity-folders, thumbhole openers (Spyderco) are all fine and dandy...but when you're INJURED, or in a confined space, or other weird circumstance most likely encountered when you will NEED that one-handed seatbelt- or clothing-cutter, I'd rather have a positive spring popping that blade out for immediate use.
But hey, that's just me. Especially front-openers...they take MUCH less space to open than any side-opener, auto or otherwise.
I realize this is splitting hairs, but my tools are for specific purposes, and the "parachutist's knife" fit my requirements exactly, and up until I guess last year, it was legal.
Panz
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