Full auto is the way to go. Boker AK74 automatic knives, several handles/ blade styles available. All have 3" AUS7 steel blades, anodized aluminum handles, side opening, single button operation, strong pocket clips. These are not cheap junk, very strong, tight mechanisms. Best part is the price. Not $150-200+, but $40 each. Contact me for desired blade color, handle color, and straight edge vs partially serrated.
Boker Magnum full auto knives. Similar to the AK74 models but with 3.5", slightly thicker blades, plain edge, skeletonized handles. $40.