"A tactical knife is one which can be constantly carried in a legal, comfortable, easily accessible manner and which becomes a natural part of the user and a controllable extension of his hand. It has a blade of between 3" and 4". with a point, (spear type or otherwise) which allows for both cutting and penetration. A clip point, false edge or sharpened top helps improve the penetration. Blade grind (hollow or flat, chisel or double-bevel) is inconsiquential and depends purely on the preference of the user. The blade must have a provision for rapid deployment such as a hole, stud or disc which can be engaged by the thumb quickly and without effort. Automatic blade deployment is acceptable for this definition.
The tactical knife should have a handle which safely shrouds the blade in the carry position, is comfortable to hold in any grip and has no sharp protrusions or edges which could injure the user. The handle should afford some protection to the fingers on the bottom of the handle as well on the top, and must lock or secure the blade, at the very least, in the open position.
Carry systems must allow for a quick draw and should offer some concealment.
Finishes to the blade and handle, materials from which they are made and decorative embelishments, I believe are of no real consequence to the definition of a tactical folder and these features are left to the good judgement of my fellow makers.
While this summery is probally incomplete, it does reflect accurately my concept of the tactical folding knife and does describe the majority of knives being sold as such today" Bob Terzuola