Simple Knex Grenade

This will probably be the best, most simple, knex grenade that you've ever built. It has a blast radius of about 10 to 20 feet depending on how you throw it. Hope you have fun building this just like I did!

Step 1: The Pin

Just make this based on the pic.
See, simple!

Step 2: Inside Ammo

Add these to four corners of the white circles.

Step 3: Outside Ammo

Another addition step.
After you add these just pull the pin and throw at a wall!