If you're gonna carry an illegal knife, don't let people, especially LEO's see it. If you need to use your UDT in a public place, open it slowly with two hands, so only an experienced knife knut who's watching closely will know that it's an auto. If you're not acting suspicious, scaring people, doing anything illegal, how's the LEO gonna know that you have an auto? Usually, if they find your knife, it's either because you were doing something you shouldn't have been doing with the knife, or you're doing something else you shouldn't have been doing, in which case the knife is not the only (potential) problem. I imagine that there are a lot of LEO's out there who don't care if an otherwise law abiding citizen has a politically incorrect pocket knife in his pocket, but if that's all you're doing that could get you into trouble they won't even know about that. If you look clean, act clean, etc, it's highly unlikely that you'll have any problems; I mean, when was the last time the police searched you? If you look unfriendly, don't give them another reason to question your cutlery. Realize that if you do choose to carry an illegal knife, you risk whatever penalties go along with that. For myself, it's not that important to carry a knife w/a spring. If it is to you, you pays your money and you takes your chances.
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Jason aka medusaoblongata
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"Paradise lies in the shadow of swords." - Nietzsche