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

Step 1: Step: 1 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! 
You could leave the rubberband at the tips but add another at the other end to keep it together... https://www.instructables.com/id/Pull-Pin-Nerf-Grenade/
Yes, I see what your saying, that can easily be done. Thanks for the feedback!

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More by davtheman223:24 lbp. spring Nitefinder mod How to make a Nerf grenade How To Make a Multi-Shot Nerf Gun 
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