Pen Gun

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Introduction: Pen Gun

Cool and easy pen gun all u need is a orange knex,bic pen,tape,and two rubberbands

Step 1: Get the Materials

get your bic pen,2 rubberbands, orange knex peice,and your tape

Step 2: Taking Apart the Pen

all you keep is the red outer tube part

Step 3: Tape the Bands

Tape on the rubber bands (YOU CAN USE MORE THAN 2 I RAN OUT THE MORE THE BETTER)

Step 4: Stick the Knex In

simpley put the knex in then tape the bands to it

Step 5: Fire!!!!!

put any thing that can fit in the barrel in and pull the knex back and let go (keep holding on to the red tube) HAVE FUN!!!

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    10 Discussions

    It is a good idea but it dont fires to far check out mine at

    https://www.instructables.com/id/pen-gun-15/ It fires ink cartrages up to 80 feats.

    Thanks for the guide. I made one myself. I found it works best with BBs or airsoft pellets. you can also use string or copper wire to improve the hold on the rubber bands. You dont want too many rubberbands because it increases the possibility of the bands falling out. You DO NOT need Knex to do this. I used a completely normal pencil. (i didn't use a normal pen cartridge, slightly larger). If you're any good at all with a knife, you can always shave a "layer" of the wood off in order for it too fit. Overall it shoots pretty far.

    check mine out, it dosent shoot bb. it shoot the ink cartridge in pens.https://www.instructables.com/id/pen-crossbow/

    2 replies

    Its a nice idea but mayyou could build sorta long ram for mor power