Introduction: Simple Knex Gun!!!

Picture of Simple Knex Gun!!!

I am going to teach you how to make a simple yet effective knex gun. I was making this rocket and the fins broke off. I got it set up again and put a green rod in the bottom of the rocket. I pulled the trigger and it launched the rod across the room with ease. It hit the wall really hard. Here is the gun!

Sorry about my voice the mic on my video camera is terrable.
I dont have a Youtube account so you have to click on the link below.


I do have a youtube account but it is very stupid right now. It is instructabletoco

Step 1: Get the Parts

Picture of Get the Parts

2 red
3 blue
1 green

3 orange
1 yellow
1 red
1 v grey
14 grey or purple

rubber bands

Step 2: Make the Triger

Picture of Make the Triger

click a green on one end of the orange connector. Put a blue on the other end.

Step 3: Build the Barrel

Picture of Build the Barrel

Put the yellow connector on the red rod. Put the orange on next. Then 5 grey or purple connectors. Another orange then 2 grey. Slide not click the triger. Then 6 more grey connectors. Then a red connector. Then a grey on the end. Add blue rods on the red connector.

Step 4: Make the Plunger

Picture of Make the Plunger

put the v grey on the end of the other red rod. put a rubber band threw the hole. You could use a grey or black rod instead. That will make it more powerfull.

Step 5: Attatch the Plunger

Picture of Attatch the Plunger

put the plunger in the red end of the barrel. attatch the rubber bands like said in the pic.

Step 6: Loading and Firing

Picture of Loading and Firing

pull the plunger back past the triger. push the triger up so it blockes the plunger from going into the rest of the barrel. Put a rod in the other end of the barrel. hold the handle and push the triger to the left or right. You can see the firing in the end of the building video.

Step 7: Have Fun

Have fun Have fun Have fun Have fun Have fun!


tinyhooman (author)2016-09-07

interesting trigger design, I can't do any other kind of trigger, only this one lol

ultimate_narwall9999 (author)2011-10-11

this was my furst knex gun i used sily band instead of normal ones and it worked just fine. by the way thats a great gun for starters i apreciate this one

Agorion (author)2010-09-10
try this one please!

The Jamalam (author)2008-12-25

I spit on you for your insolence at posting this gun!!!!!!1 Just joking, throw it in the block pile...

DrWeird117 (author)The Jamalam2009-01-04

*Sigh*.....throw another flag on...

The Jamalam (author)DrWeird1172009-01-06


TOCO (author)The Jamalam2008-12-26

It is a simple gun and can be powerfull.

TOCO (author)TOCO2008-12-26

If you dont like it you can make a better one.

The Jamalam (author)TOCO2008-12-27

but all guns can be powerful, this is just an other tube and stick gun! I apreciate that you put some effort into this, and well done, but it is nearly the same as other tube/stick guns.

lord voldamort (author)2008-12-30


About This Instructable




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