Instructables
Picture of Homemade BB Gun
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Materials: soda bottle top, balloon, rubber band, bb's.

Procedure:

1. Take the soda bottle and cut off the top part of it.

2. Wrap the balloon around the top of the soda bottle and secure it on with a rubber band.

3. Fill the balloon with bb'(s) and pull it back.

4. Release and watch the bb's go flying.

Check out my YouTube channel for this and other tutorials: http://www.youtube.com/user/vistigioful/videos?view=0&flow=grid&sort=da.
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I have also made just like that

ajensen19 (author)  Emperor Towhid13 hours ago
You're awesome.
Master Wasi8 months ago

I made one but the balloon tears a part after one day.Do you have any solution for this ??????