First of a all don't shoot this at any human or animal it will cause severe injuries. This is meant only to be used for shooting at targets for enjoyment not hunting. I will not be responsible for any injuries or damages caused by misuse of this or any accident caused by this. Use at your own risk. This Instructable shows a fast easy way to make a fun blowgun with little materials in under a half hour that will actually stick into wood . The one I made cost me nothing at all.
This should be simple
1. Duct tape
2. A pipe, the longer and skinnier the better
3. Some framing nails, 2-3"
4. A Dremel with a grinding tip or a file or any kind of sharpening tool (this is optional)