I'm looking into buying a knife to carry. I live in NYC, I don't really know the laws here but if any of you do that would help. I think it just cant be bigger than my 4 fingers in length? I was looking for an automatic opening or maybe spring assist. Mainly due to my thought that if I ever need it for self protection, it would be beneficial to have it open as fast as possible, I also don't really like opening with the thumb thing, too hard imo. Basically, it will stay closed in my pocket/jacket unless I need it for protection or something. edit- i dont even know if its legal to carry a knife for protection. let me know if its not.