How do I make a mini pen gun that shoots in fully auto?

Sorry if I published it again I'm not sure if I published it the first time

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Use a air compressor

MFPOSGBCS7 years ago
im coming up with one but its not "mini" its a bit bigger :-(
do i get best anwser??
check out my instuctable
Someguy18 years ago
Define "mini".
If it means small, this won't work, but anyway...
benthekahn8 years ago
It would be hard to do because the amount of ammo needed for automatic fire would not fit in a pen.