Introduction: KNEX POCKET GUN


This is an easy 20min build Knex Gun, with a lot of power and an easy locking method*. It is very compact but still packs a nasty amount of strength! It is not a toy.

You'll need the pieces shown in the picture as well as 3 'standard' elastic bands or some reasonable equivalent. If the gun snaps often you can superglue the parts on. So let's get started!

*The trigger should fall down due to the elastic bands.

13 grey
1 yellow
1 'hubcap' brown
2 red
3 orange
1 black joint
2 light grey
2 black 'square' joiners

4 white
2 red
1 blue

6 blue (4 when using revised version)

If in doubt all will become clear in the following pictures.

Step 1: Construct

Picture of Construct

Build end of firing rod.

Step 2: Build Firing Rod

Picture of Build Firing Rod

Get red piece and add 'hubcap' like so.

Step 3: Finish Firing Rod

Picture of Finish Firing Rod

Add the parts from step 1 and 2.

Step 4: Build Trigger

Picture of Build Trigger

Construct - two white rods, two grey connecters, an orange connector and the two black connectors.

Step 5: Handle

Picture of Handle

Build handle as pictured. If it is too small to fit your hand then adapt one.

Step 6: Main Barrel

Picture of Main Barrel

Get a NEW red rod and put these on. This is separate to the firing rod. The red connectors are fixed to the red rod in their middle joint.

EDIT: Please look at note (yellow box surrounding blue connector) the gun works better without this blue piece - sorry for inconvenience.

Step 7: Next Part of Barrel

Picture of Next Part of Barrel

Build this on the other end of the SAME red rod as in last step.

Step 8: Finish Barrel

Picture of Finish Barrel

The barrel should look like this.

Step 9: Add Trigger

Picture of Add Trigger

Fix on trigger as shown to the barrel.

Step 10: Fix on Handle

Picture of Fix on Handle

Fix on handle as shown.

Step 11: Gather Elastic Bands

Picture of Gather Elastic Bands

You'll need 3 'standard' red elastic bands or good equivalent.

Step 12: Fix on Elastic Bands

Picture of Fix on Elastic Bands

Slot the firing rod into the barrel so the yellow piece on the end of the rod is on the opposite end to the black piece at the end of the barrel. Fix on elastic bands as shown in the pictures.

Step 13: Fire Away and Hold in Right Place

Picture of Fire Away and Hold in Right Place

PLEASE HOLD THE GUN AS SHOWN OR YOU WILL GET HURT! This gun is small, but that has its drawbacks. Be careful when holding the gun, you don't hold it like a real gun.

Pull back the firing rod a long way until the trigger drops down (if it does not, your elastic bands are either too weak or in the wrong place - manually push down the trigger in this case). Load your ammunition, aim, holding the gun as shown and push the trigger to the left. The firing rod will shoot at whack the ammunition which will fly out very accurately.

I use white rods with red 'arrowhead' connectors as ammunition but anything will work - I just found that these were the best. If the gun does not work for you please post a comment and I will try my best to help you out - the gun is usually very reliable and fires powerfully.



Step 14: Modifications

Take out the blue 'connector' mini piece on each end of the gun (not the doubles in the middle) and the gun will not bend.

Thankyou for pointing this out.


lphillips094 (author)2010-08-03

oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! oodammo! great job

travw (author)2009-10-06

Virtual high five!

DJ Radio (author)travw2009-11-01

I just gave him 5 stars for using oodammo in 2006.

oodalumps (author)2009-10-06

bunduk deserves a high five. Using oodammo before it was oodammo.

DJ Radio (author)oodalumps2009-10-07

So it isn't really yours.  I knew there was a gun that was using oodammo before you made it, but I coudln't find it.

oodalumps (author)DJ Radio2009-10-07

I was the one who discovered it's accuracy.

Also, even though I hadn't posted it on the internet, I was using oodammo sometime in october 2006.

DJ Radio (author)oodalumps2009-10-09

Ok fine, leave it at that.....

StyleCore (author)2009-10-06


thebboy (author)2008-02-09

WE'RE ALL GUNNA DIE!!!!!!! and i know when it's gunna happen.

DrWeird117 (author)thebboy2008-09-10

sigh......December 27, 2012....

knex_mepalm (author)DrWeird1172009-08-20

how, where, why do we keep having fun when the end is coming?!?!?!??! Even if it is old, knex did better.

Wafflicious (author)DrWeird1172009-01-28

Are you like. A Mihan Priest? (can't spell mian.)

DrWeird117 (author)Wafflicious2009-01-28

Mayan, and NO.

ajleece (author)DrWeird1172008-11-02

14th February 2064... EAT THAT DR WEIRD

DrWeird117 (author)ajleece2008-11-03

Happy Valentine's hon... KABOOM!!!!!

DrWeird117 (author)ajleece2008-11-03

Om nom nom nom!!!

thebboy (author)DrWeird1172008-09-11

uh, yay, actually. we were studying the mayan during the time.

DrWeird117 (author)thebboy2008-09-11

AH HA!!! I Is RIGHT!!!!!

thebboy (author)DrWeird1172008-09-12

ya. that's the way it goses.

DrWeird117 (author)thebboy2008-09-12


thebboy (author)DrWeird1172008-09-13


DrWeird117 (author)thebboy2008-09-13

: )

thebboy (author)DrWeird1172008-09-13

um, yes.

DrWeird117 (author)thebboy2008-09-13


thebboy (author)DrWeird1172008-09-14

ya. right

dynno97 (author)2009-07-27

5 Stars cause its so old...

J4mm3r5 (author)2009-04-19

love it.....I need not say anymore 5*s

hobo lord (author)2006-12-03

the firing pin looks bent and weak maybe you should try another design!

bunduk (author)hobo lord2006-12-19

Thats 'cos its's powerful=0-< do you like my attempt at a man.

Mepain (author)bunduk2007-01-09

you should try this =0+<

bunduk (author)Mepain2007-01-12

Not bad although we are spamming slightly.

bunduk (author)bunduk2007-01-12

my guy looks good with 1 arm.

Wafflicious (author)bunduk2008-12-06

=)=< hah!!! mine has both arms

Wafflicious (author)Wafflicious2008-12-06

i got a better one! =)<-<

DrWeird117 (author)2008-07-30

Haters whose droning request for the list are much more annoying than block triggers. Copy and paste if you agree.

I_am_Canadian (author)DrWeird1172008-08-18

this was one of the very first guns...

DrWeird117 (author)2008-07-30

Haters whose droning request for the list are much more annoying than block triggers. Copy and paste if you agree.

blak788450 (author)2008-03-21

As a beginner and on my irst visit to the site, this is my first gun and im impressed. mine doesnt bend its fine. if u could post a newer version for beginners with a real "gun" feel, thgat would be great!

Bright Shadow (author)blak7884502008-03-26

You're going to have a hard time looking for a realistic feeling gun. This is the most realistic one I've found

what about mine?

are you talking about your avatar?

well my gun is my avatar, but you can build it on my homepage

if you make a different stock (see below), it would be very realistic. That's my opinion this is how I like my stock

actually, I haven't seen yours yet.

The Jamalam (author)YAY RANDOM !2008-06-17

double post!

gunnerguy (author)2007-11-11

this gun hurts it almost made a hole in my window screen

BuilderP2K (author)2007-06-23

awesome gun. built it 10 min. ago, first shot it went a good 40 feet, thanks, good instructable.

siege engines ahoy (author)2007-01-21

This is such a freaking awesome gun I love it i love it i love it etc. etc. It took me about 3 minutes to make, it's really nice.

About This Instructable




Bio: I shoot stuff, make funny videos , mess around with mt bro play my ds and other cool stuff boys find fun
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