How to Make a Nerf Grenade

I know this isn't original, so just give me credit for extra darts

Step 1: Step: 1 Materials

Materials:
21 Nerf darts (Streamline) 
1 small rubber band (The smaller the better)

Step 2: Step 2: Making the Grenade

just take all of the darts, bundle them together, and wrap the rubber band around it

Step 3: Step 3: Arming It

To arm it, move the rubber band up the grenade until the bottom flares out

Step 4: Step 4: Throwing It

Under hand it tips first. The blast radius really depends on how fast you throw it.I just dropped it about a foot

Step 5:

If anything is wrong with it or you fix any problems, let me know. Thanks!