Introduction: TR18

Picture of TR18

the most up to date designs are pictured near the end of the slideshow


Sharir1701 (author)2012-07-21

yay! handle wrapped with spaghetti...

ynohtna1 (author)2012-07-18

my pin guide stops the ram from going back. the stock is blocking the grey connectors on the slide also. any ideas

happybirthday (author)2012-01-21

I finally got around to building this... It's really amazing. Kudos to you, KIllerk.

skyfaller (author)2012-01-03

Having a bit of trouble.. my turret is spinning so i cant shoot the bullets...

danroy99 (author)2011-12-06

Wait what is this supposed to shoot?

danroy99 (author)2011-12-03

This is the most amazing, powerful gun I have ever built. Great job KillerK!

beanieostrich (author)2011-10-05

Yo KILLERK! I am building a TR-18 right now! I will show you when it is done.

cool yeah show me for sure!

Here is my current TR18.

skyfaller (author)beanieostrich2011-10-09

Haha, nice.

beanieostrich (author)skyfaller2011-10-10

Thank you. =)

ryry2011 (author)2011-08-26


ricky0207 (author)2011-04-03

Firstly I would like to say this is an amazing gun, and have rated it 5*.

So I built this yesterday after what I hoped to be a brief return trip to the world of k'nex, and decided to add a few modifications over the weekend...

I have added a reinforced stock similar to the one on your TR8, and a Mepain style scope. I am also thinking about adding another wider barrel onto the end (after the turret) to make it more sniper-ish...

Also, at longer range, using normal ammunition (white rods) do your projectiles swerve right slightly?

thanks you man!
as for the projectiles shooting to the right... i haven't had that issue but experiment around and see what works best for you... if your still having problems get back with me : )
as for the gun you have there... LOOKIN GOOD man : ) lol have a good one bro!

slimshaddy (author)2011-03-21

i made this gun and it has a modded front to where you can take the 18 shot turret out and put an 8 shot turret in or just make it single shot and it shoots around 250ft 5*

good stuff man you gotta any pics?

yea in one sec pics are from my phone here they are also i will be making a video soon

Fred the evil puppet (author)2011-02-19


Fred the evil puppet (author)2011-02-19


rookiebuilder (author)2011-01-29

My TR-18 has an extended stock and a mini-scope. I used your pics and it came out great! I added enough rubber bands to shoot a hole clear through a Pepsi can!!

sounds like you built it correctly! nice stuff man

Well, great building experiences don't come without great ideas! Your gun was CRAZY COOL!

slimshaddy (author)2011-02-01

instead of using the gray two slot connectors can u use red connectors?

slimshaddy (author)2011-01-29

how do u make the mod on the handle with the blue clips

Knex Lego Maniac (author)2010-07-21


Furloy (author)Knex Lego Maniac2011-01-22

he spammed his own 'ible!

does it actualy explode? if it does ..... POST!!!!!!!!!!!

yes it explodes! sends pieces up to 50ft in all directions c it here

thx awsome.... so.. are you going to post???? if your are ... AWSOMEW you rock

it is simple to build based off of my forum pics

Mace! (author)Knex Lego Maniac2010-08-16

For me whenever I throw it it explodes in mid air any tips?

Knex Lego Maniac (author)Mace!2010-08-16

first get me some pics of what u r doing then ill help u out

Mace! (author)Knex Lego Maniac2010-08-17

It might be hard to get pics as most of the grenade ended up on the roof... I'll have to watch the video and thanks.

Mace! (author)Mace!2010-08-18

Yes! I got it out of the gutter with a ladder yesterday. I watched the video and it really helps if the band are doubled and I was putting the pin on wrong. I fixed all that and it works like a charm now! Thanks a lot!

Knex Lego Maniac (author)Mace!2010-08-18

Awesome man! good to hear im happy u like it... the grenade isn't any fun to load up but throwing is always a blast

Knex Lego Maniac (author)Mace!2010-08-16

make sure u build it like i have pictured in my forum and only hold it in the middle of the grenade never the its important u build it exactly as i have pictured on my forums and how u band it is everything...i have some vids up on youtube on how to band my grenade just look up KILLERK or grenade knex w/e good luck get me some pics and ill help some more

Knex Lego Maniac (author)2010-09-20

this minor mod helps keep the return band attached which is great for shooting at a high ROF

Where are ibles for this gun?

mahmel (author)Knex Lego Maniac2010-12-16

What does ROF mean?
I've built the gun btw and it's by far the best gun I ever had!

Knex Lego Maniac (author)mahmel2010-12-28

thanks man an i c u found out what ROF means already so good stuff its been awhile since i have worked on knex but here is a pic of my new TR project

mahmel (author)Knex Lego Maniac2010-12-30

Yeah, I like the stock :D
But the the pin guide is filmsy, can't you use the normal pin guide?

Knex Lego Maniac (author)mahmel2010-12-30

it is a pretty standard pin guide i think? what do you mean? it holds up amazing for me but id love to hear what u have to say about it
the pin guide is a black rod and when the pin is fully charged and locked back behind the trigger the firing pin itself rests as close as possible to the strongest connection point
anyway here r some pics of my TR8

mahmel (author)Knex Lego Maniac2010-12-31

Yeah, I like it, but I mean you can look through the pin guide.
And the bands that you use at the handle, are they those 3-layers bands or custom bands?

Knex Lego Maniac (author)mahmel2011-01-02

the pin guide is only the black rod that guides the firing pin
the stock is the black rods that construct the stock and allow for the addition of a slide
i think i got what you mean if so then that should of made sense lol
the handle was surgical tubing wrapped around the handle i now use the tires show above

SpeedStrikerXLR (author)mahmel2010-12-30

ROF meat


rookiebuilder (author)mahmel2010-12-18

Rate Of Fire

mahmel (author)rookiebuilder2010-12-19

Ah thanks :D

how do i get the connector to clip on?

just push it down onto the snowflake piece real hard it should snap into place

Dirtyboyy (author)2010-09-05

my version ..

About This Instructable




More by Knex Lego Maniac:TR8-2015 updated 05/01/2015DAM updated 04/12/2015K'nex Directional Mine Prototype last updated 09/10/2013
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