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Mechanical Pencil Gun

An easy to make office weapon capable of firing anything that will fit in the barrel.

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Step 1Gather Materials

All you need is a BIC mechanical pencil and two rubber bands. Pencils by BIC are perfectly suited to this (I haven't tried any other models yet). You also need a knife/razor to make an incision later.

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259 comments

1-40 of 259

Apr 22, 2011. 5:26 PMSquibb says:

Next time, you should try to make a semi-automatic mechanical pencil gun. Just drill a hole in the barrel of one pencil and then stick the other pencil in the hole. Fill it with BBs or whatever you want that will fire.

Apr 8, 2012. 9:07 PMJeuan says:

The bb's jam I tried it a while ago, they end up going half way in the barrel with the one you're away to shoot

Feb 20, 2012. 2:22 PMVanila says:

You can also use these at close rang by pulling back and "popping" someone with gray part that protrudes from the end of the barrel.....In elementary school I took one to school with intent of shooting various objects. However by the end of the week the favor was returned with a painful "pop" by a weapon now dubbed the "popper" by the sound it made when you "popped" some. (Within days every guy had one)

Nov 9, 2011. 10:21 AMjaylan77 says:

try using choped up secsions of a pencil?

Oct 1, 2011. 6:51 AMfastcalvin says:

i love this thank you very much

Apr 25, 2011. 11:22 AM

samaside says:

Anyone know what size BBs work the best?

Sep 7, 2011. 1:16 PMknexdestroyer says:

6mm .12 g bb's would work the best

Aug 3, 2011. 3:06 PM

NE patsrock says:

regular airsoft bebes

Apr 21, 2011. 1:55 PMoa-j says:

just use the pen ink cartridges... works fine but curves alot.....use close range

Mar 18, 2011. 4:09 PMcwestrum says:

you can put staples or needles in the wax too.

Mar 18, 2011. 4:07 PMcwestrum says:

I like to use a little bit of wax candle or cheese wax. It sticks to the black end and you can stuff it so it compresses the air and hits harder.

Jan 9, 2007. 7:29 PMsszeprocks says:

dude, how much fps is this thing

Mar 14, 2011. 6:22 PMcookie38 says:

6000000 mile per millisecound

Mar 9, 2011. 3:06 PMLook Over There says:

awesome except i had to use a knife to cut the edge off and it took 1+ hour

Jan 11, 2010. 8:27 PMsportguru says:

Hahaha. I used one of these and got expelled for it..

Jan 26, 2011. 4:22 PMawesomekitteh says:

yeah sure ya did

Jan 8, 2011. 9:30 AMAir_Assassin says:

Lol when I use it in class I shoot my friends and my teacher knows I haz it but she doesnt CARE lollolololollololololololollololol

Dec 27, 2010. 1:09 AMbeehard44 says:

o yeah, if you use a skewer instead of the mechanical pencil insides, you will see that the whole thing goes in the barrel for a split second. It cuts the rubber band eventually.

Dec 23, 2010. 6:46 AMHiddenBlade1234 says:

it cool im using small screws that i had from other projects

Dec 11, 2010. 12:54 PMkooljoe45 says:

best damn launcher EVER! I put in a straight paper clip, pulled it back, BAM! now there's a hole in my wall, AWESOME!

Dec 18, 2010. 7:22 AMAir_Assassin says:

DAM thats powerful

Dec 18, 2010. 7:18 AMAir_Assassin says:

dam thats awesome

Dec 10, 2010. 3:12 AMaarrnnoo says:

simple but cool :)

Jul 30, 2008. 7:16 PMmeatygut says:

i did but it doesn't hurt or anything, do u have to use bb's? cuz im using things like pebblez, dog kibbles and bird food, but nothing work

Oct 29, 2010. 8:10 PMletnetik says:

I used small cut up skewers cut off the grayish part that sticks out, loaded the pieces into the grayish part of the pencil works perfectly!

Mar 17, 2010. 11:50 AM175airsoft says:

Use little knex pieces i made one and that works best Once i was in class and i accidently shot my teacher but no one admitted it .

Mar 14, 2011. 6:14 PMcookie38 says:

Epic dude i wont forget u .u r my idol will you be my friend

Dec 10, 2009. 10:32 AMdirtnap says:

Wow man. Dont use bb's. What you do is get a piece of paper and wad it up to the size that fits your barrel then staple one end of it, and make the staple pointy so it can hit the victim and go into em'.

Aug 13, 2008. 12:57 AMhoogilyboogily says:

hey wat r bb's?

Oct 2, 2011. 7:23 AMjbyrd117 says:

butterfinger bb's

Oct 27, 2008. 2:02 AMruntherd99 says:

Ball Bearings

Dec 18, 2010. 7:21 AMAir_Assassin says:

No they are ball bullets

Dec 18, 2010. 7:18 AMAir_Assassin says:

No they are ball bullets

Nov 28, 2010. 3:29 PMDacrazyDude says:

ball bearings are too heavy to fire out of a pencil gun. i think bbs refers to the kind that are shot out of an airsoft gun

Aug 16, 2010. 5:09 PMDog Tennis says:

Just a little tip, I personally find it better to have another rubber band and wrap it around the inside shaft right next to the eraser, i have the problem of the shaft getting stuck whenever I fire, its keeps it from jamming up, and its quieter too, so there, if that makes any sense ^^

Jul 23, 2010. 8:06 PM_______________ says:

If u really want it to hurt. Put a straight paper clip in the inner tube. One time I shot the cilp straight up and when the clip landed , it was stuck on the floor pointing up.