This is just a small, pointless assault knife which is comfortable and has a clip in sheath. If you really want Tactical Knifes in your K'nex war, use this.
It's really not that useful, just a bit of fun really, and also to show a new concept.
Step 1: Blade
Just build this. It's that simple.
Step 2: Handle
Slightly trickier. It should all go together.
Step 3: Connections
Put the 2 together.
Step 4: The Sheath and How to Apply.
Build the sheath, and put the blade in it. Simple as.