Intro: K'NEX Derringer
small, simple, and very powerful for it's size.
Step 1: What You Need
Step 2: Step One
Step 3: Step Two
Step 4: Step Three
Step 5: Step Four
Step 6: Rubber Band and Cocking
Step 7: Firing
put a tiny green rod in the front.
hold by white rod and push side of barrel down with thumb.