Introduction: "True Trigger" Knex Gun/ Pistol by Bannana Inventor

Picture of "True Trigger" Knex Gun/ Pistol by Bannana Inventor

This is a "true trigger" knex pistol. It is pretty powerful for it's size. It can also shoot over 30 feet with the right rubber bands.(I used two.) Please rate and comment. Enjoy.

Step 1: The Handle.

Picture of The Handle.

Build the handle you will need the following:

4 circle connectors.
3 gray spacers.
2 yellow/gray rods.

Step 2: Building the Body.

Picture of Building the Body.

Build these parts. You will need the following:

6 white/black rods.
4 yellow/gray connectors.
4 blue spacers.
3 blue rods.
2 two slot connectors.
2 circle connectors.
2 green/black.

Step 3: Building the Body.

Picture of Building the Body.

Connect the pieces you have just made as shown.

Step 4: Building the Trigger.

Picture of Building the Trigger.

Build the trigger parts. You will need the following:

5 blue spacers.
3 blue rods.
3 white/black rods.
3 red connectors.
2 single gray connectors.
2 green rods.
1 gray spacer.
1 tan single connector.

Step 5: Connecting the Trigger Pieces.

Picture of Connecting the Trigger Pieces.

Connect the pieces you have just made as shown.

Step 6: Building the Ram.

Picture of Building the Ram.

Build the ram as shown. you will need the following:

1 red rod.
1 orange/black connector.
You also can use tape so the ram doesn't fall apart when you shoot it.

Step 7: Building the Barrel.

Picture of Building the Barrel.

Build the barrel as shown. You will need the following.

12 yellow connectors.
5 green rods.
5 gray single connectors.
2 white rods.
2 blue spacers.
1 circle connector.

Step 8: Finishing Up the Gun: Rubber Bands and Connections.

Picture of Finishing Up the Gun: Rubber Bands and Connections.

Connect the major pieces you have made (handle,body,barrel,and trigger)as shown. Connect the Rubber Band and you are ready to shoot. If you have any troubleshooting with these instructions please leave a comment.

AMMO: For the ammo I recommend the blue or yellow rod, however this gun can shoot any of the knex rods.

Thanks for building this gun!!!


zkids91 (author)2011-08-01

this gun rocks thankyou so much

thehoyboy (author)2011-01-30

thanks it is pretty good

lioneatr (author)2009-04-05


meat grinder (author)lioneatr2009-11-06


meat grinder (author)2009-11-06

8 blue spacers

DJ Radio (author)2009-09-11

I made the gun some time back... I liked it, except for the fact that the trigger sometimes broke, the barrel moved forward, and it lacked a bullet lock.

Ps2playa (author)2009-07-02

i made this gun and it fires pretty good

Hugo4123 (author)2008-07-27

could you make a magasine upgrade?

Easily!!! All you would have to do is lengthen the barrel, change the RAM to a gray rod, spread apart the yellow connectors, and make the magazine. :D

your guns always looks small in the pics but are not!!!!!!!!!!!!!!

saske34 (author)2008-11-09

how do you load and fire the gun? please post video.

caebersbach (author)saske342008-11-10

you stick any k'nex rod into the barrel, (end of barrel), and do that once the ramrod is pulled back, then pull the trigger

caebersbach (author)2008-10-28

oh, sorry, i'm a moron!! it's any k'nex rods!

caebersbach (author)2008-10-27

sweet gun!!!! by the way, wha ammo. does it shoot??????LOL! any ways spectacular anyways, 5 stars!

Oompa-Loompa (author)2008-10-16

*gasp!* viccie spamming? even if it was a long time ago, LoL

Skreetsha (author)Oompa-Loompa2008-10-17

i began posting oops! i will delete :)

Oompa-Loompa (author)Skreetsha2008-10-17


DustyCloud (author)2008-09-21

I love your gun! I saw a small problem though; there was a lack of structure. With the gun sliding back and forth, it makes a bit of a challenge to keep a solid sight for any length of time. Could you give me any tips on how to reinforce the gun?

DJ Radio (author)2008-08-18

this is an excellent gun. this even did better than your true trigger gun. the only improvement i would recommend is that there should be no block trigger in the first place

DJ Radio (author)2008-08-18

should I build this pistol or the pistol with the hopper?

derty123 (author)2008-08-13

this gun rocks thanks bannanainventer!!!!!!!!!!!!!

instructable doggie (author)2008-06-19


hey! this looks like a snubby

That's a type of gun... right?

another name for a snub nosed revolver : )

Cool. I wish it was a revoulver.

that'd be cool, but those are really hard to make! at least it looks a lot like one! : )

They're not hard to make they're extremely hard to make. lol. Anyway it does kidda look like one.


im kind of a philosopher, tell me if you agree with this?

-You won't mind doing it if you don't know you're doing it.


Yeah. It makes sence to me. :D

tyvm... : )

yw. :D

Vynash (author)2008-06-19

pretty good 4*s

bannana inventor (author)Vynash2008-06-19

Thanks, glad you liked it!!! :D

Vynash (author)bannana inventor2008-06-19

no problemo and that was from 32 seconds ago lol

bannana inventor (author)Vynash2008-06-21

That was fast too fast!!! :D

Vynash (author)bannana inventor2008-06-22

well not really lol I have seen like something 5 seconds ago

bannana inventor (author)Vynash2008-06-22


Vynash (author)bannana inventor2008-06-22


bannana inventor (author)2008-06-21

Click here to enter your gun in the weekly best gun competition.

k master (author)2008-06-20

this is one of the better guns I have seen!!!


extreme builder (author)2008-06-19

thats my trigger system on my revolver can u just please give me credit

ADDING TO MY LAST COMMENT: I did get an idea for the barrel form your revolver and I'm giving you credit right now, however I DID NOT copy this trigger design from any gun.

i believe you.

but its the exact same thing?!

Man I respect you as a builder but you are starting to get on my nerve. Why would he lie? He gains nothing and even admitted to the barrel.

dsman195276 (author)TheDunkis2008-06-20

ya, really. i had the same thing with my rifle. a RBG made by someone used the same concept to shoot and they said i copied it.

ok ok sorry bannana inventor for accusing you of taking it

About This Instructable




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