This instructable wil show you how to make an reusable cheap airsoft grenade without explosives using:
-MM candy bottle
-Big Spring (You can get this out of an airsoft gun or buy one)
-Tube
-String
-Tape
-BBs

This might suck because this is my first instructable.

Also check out my other articles:
http://scienceray.com/technology/how-to-make-an-airsoft-gernade-without-explosives/
http://musicouch.com/musicouching/free-music-mp3-sites/
http://quazen.com/shopping/consumer-electronics/best-two-way-radios-guide/
http://gameolosophy.com/games/online/runescape/runescape-woodcutting-guide-21/
http://gameolosophy.com/games/online/runescape/runescape-dungeoneering-cheats/
http://musicouch.com/musicouching/how-to-hack-your-mp3-player/

Step 1: Cut Off Cap of MM Candy Bottle

Cut off cap of MM Candy bottle, leaving a small rectangle at the end of the cap.

Step 2: Tube and Spring and Bottle

Attach spring to the bottom of the tube. You can tape it or glue it.
Now, attach spring to bottom of MM candy bottle. Once again, tape it or glue it

Step 3: Tie the String

Tie one end of the string to the bottle and glue or tape the other end of the string onto the cap

Step 4: Pour Bbs Into Tube

Pour bbs into tube.
They can be any type, 6mm, 8mm, etc.
They can be any weight, 0.12 gram, 0.20 gram, etc.

Step 5: Set the Grenade

Place the cap over the tube, and push down until the cap attaches onto the top of the MM Candy tube.
This compresses the spring .

Step 6: Throw

Throw it. The movement should disturb the cap and decompress the spring, pushing the tube and bbs out very fast. It is reusable because it does not use explosives.
The only downside to this gernade is that the bbs only shoot out in one direction.

Thanks for reading, please comment.
This was my first instructable, and it probbaly sucks.
Hope it helped some people