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Well, this kid named Danny that is in one of my honors classes has like thousands of these generic transparent pens that he transforms into blow dart guns. I came up with this while sitting in Honors Physical Science. Not really amazing, kind of silly, (really silly), but i guess if your this crunched for space it will help :)
Step 1Materials
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Okay first off, you will need a nice sharp knife, or a hacksaw, or some pliers ( Whatever you prefer!) And a regular generic pen.
cough* cough* :D