Gerber Fast Draw
Video description:
The full-sized Gerber fast Draw knife. Picked up at Walmart for $40, these "assisted" knives aren't available in all locations. Can be found online at similar price ranges. Similar to a switchblade, the knife will spring open. The difference being the assisted release knives still need some effort from the user to get it started (this'll keep it form going off in your pocket). May not be legal in all areas but I had some trouble determining exactly where these knives are and aren't allowable. They fall into a gray area of sorts. Fortunately the WalMart in Bedford NH had it. The full sized is 3.0 inches but there is a smaller version out as well. Blade locks into place and is released by a small switch.
