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Super easy pen gun. All that you need is a Pilot G2 pen or similar pen. (They have easy access to the spring.)

Step 1: Get a Pilot G2 Pen

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Come on people, this step takes five seconds. If you don't have one, you can find them on the ground at school. Once you have obtained this then you can begin with the rest of the steps

Step 2: Disassembly

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Disassemble the pen (don't bother with the small white piece at the end of the pen near the clip) That's all you need for this step.

Step 3: Put the Spring on the Writing end of the Pen

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Put the spring on the pen.

Step 4: Put the writing part into the "Chamber"

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Shove the pen in there- just not too hard. You don't want it in there too hard.

Step 5: Put the cap back on the pen

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Put the cap back on- just barely, if you bump it- it will fall off. Then for firing just click the pen and it should get at least 10 - 20 feet depending on how hard you press it. For variation you might want to glue the cap to the end of the writing part.
skrilllex says: Sep 26, 2012. 6:08 PM
i made a better version of this,first u take it apart so that none of the peixces r still inside. so u put the button that u click in then the spring then the other tiny peice and screw in the front part back in and get a saw and saw away part of the front so its wide enough for an ink tube(from a bic pen or another type of pen) 2 fit in, but b careful to not cut it to muck or else the spring and all the other little peices go flying ever where . to load it u just stick in the ink tube and keep trying until the spring locks(sometimes this doesnt work on some unlucky pilot pens) then press the button and it shoots it.
_Scratch_ says: Jun 16, 2011. 7:31 PM
I do this at school all the time, freaks people out if you shoot over their head.
luftwaffe29 says: May 13, 2011. 12:29 AM
This is dangerous. I once had a friend who fires this into one guys eye. Be safe while playing with this as it could hurt.

nugget50 says: Jan 5, 2011. 6:58 PM
wat does it shoot
kmaungyoo in reply to nugget50Apr 6, 2011. 4:16 AM
I think it shoots the cap of the pen it says
The3rdPunch in reply to nugget50Jan 11, 2011. 4:30 PM
The cap.
killer says: Mar 14, 2011. 2:29 PM
g
gr
gre
gea
great
grea
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Plo Koon says: Mar 5, 2011. 1:41 PM
Neat-o
Plo Koon says: Mar 5, 2011. 12:34 PM
Cool. when i fired it, i lost the cap :( Then i found it again :)
Air_Assassin says: Nov 27, 2010. 6:56 PM
GREAT GUN
nccm12 says: Nov 5, 2010. 3:39 PM
I like it.
polar568 says: Oct 8, 2010. 5:35 PM
i think its cool i did it with a pen (not the one you had mentioned) and it worked great not 10-20 feet but still cool (maybe 5 feet)
T3hpw9ag3 (author) says: Oct 10, 2007. 5:13 PM
This is my first Instrucable, please be fair and comment on how to make it better.
Oyarsa in reply to T3hpw9ag3 Jan 16, 2009. 4:58 PM
I like this idea, but it would be nice if there was a way to keep the spring from falling out.
death_to_you_now in reply to OyarsaSep 9, 2009. 5:40 PM
you could tape or glue the spring to the ink cartridge
stopanator says: Aug 23, 2009. 2:15 PM
i do this all the time plus i did it without this i knew how to make for longest time now
sharlston says: Aug 6, 2009. 2:03 PM
oh thats well cool the writing part is the pen barrel or the cartridge
EnigmaMax says: May 28, 2009. 6:18 PM
nice! never thought of that before.
fabz13 says: Feb 2, 2009. 5:37 PM
i already knew you could do that
T3hpw9ag3 (author) in reply to fabz13Feb 2, 2009. 7:01 PM
this is for the informative purpose for others....
fabz13 in reply to T3hpw9ag3 Feb 7, 2009. 8:47 AM
uhhh...ok
T3hpw9ag3 (author) in reply to fabz13Feb 8, 2009. 6:25 PM
and i had this on here first..... so the people that DONT know can use it
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