Introduction: Knex Sniper With New Firing System

Picture of Knex Sniper With New Firing System

This is my first Instructable and it utilizies a new firing system quite unlike all other knex guns on this site. It uses a "catapult" system where a rubber band is pulled back and over a bullet in the barrel and is catapulted forward by the rubber band. It is hard to understand from writing, but make this gun (or something like it) and find out how awesome it is! (I got this gun to shoot 60+ feet, and this new firing system is more efficient per rubberband, so the bullets fly faster as well)

Step 1: Construct Stock

Picture of Construct Stock

Pretty self explanatory,just make this picture. This is optional, it just makes the gun look cooler.

Step 2: Construct Piece Which Holds Rubberband at the Front of the Gun and Gets Pulled Back on to the Bullet Which Eventually Will Be Fired

Picture of Construct Piece Which Holds Rubberband at the Front of the Gun and Gets Pulled Back on to the Bullet Which Eventually Will Be Fired

Well, the name of this step pretty much says it all.
1. Completed Piece
2.First Thing You do
3.Add green connectors, blue circle things, and something at the ends (doesn't have to be the beige things)
4. Add long rubber band to the top tooth of the green connector, and secure it on both green connectors by putting on green rods over the rubber band.

Step 3: Construct Barrel and Front of Gun

Picture of Construct Barrel and Front of Gun

Sorry for not too many pictures on this step.However, it is self-explanatory.
1. Construct this large piece. Line up two long grey rods and connect them with 7 yellow connectors. Then put on 8 greys on either side before putting another yellow connector to secure that. Add two more greys on each side, another yellow connector, 10 grets on one side, another yellow connector, and then add two orange connectors to what is left of the original two grey rods. Finally, add three grey rods to the bottom of the yellow connectors as shown in the picture. (sorry for this being confusing)
2. Add handle by putting 7 yellow rods to the bottom of the Yellow Connectors
3. Construct Trigger
4. The final piece, with trigger inserted into barrel. Insert trigger by putting the blue end into the yellow barrel at the end of the gun and attatching the other end of the trigger on to it. This makes it so the trigger won't fall out of the gun.

Step 4: Construct End of Gun's Body

Picture of Construct End of Gun's Body

Sorry for only one picture, but it's easy to follow. Just make what is in the picture.

Step 5: Put Things Together

Picture of Put Things Together

1. This is where you connect the two ends of the body. The Three orange/black connectors shown here are connected.
2. Other part where the two ends are connected. snap the grey rods onto the yellow/grey connector, and attatch the rods to the orange connector.
3. Attatch the stock to the end of gun as shown here.
4. Attatch the piece that holds the rubber band to the front of the gun, as shown here.

Step 6: Loading/Firing

Picture of Loading/Firing

1. This is the ammo you want to use, the ones on the left work the best.
2. Put ammo into the end of barrel as shown here
3. Pull rubber band back and around the ammo, as shown here.
4. Another image of loaded gun. Pull back on the trigger, and the piece will get catapulted forward very quickly and it will fire very far.
5. Here are some other guns I have made using this system. They include single, double, and triple shot guns, and I have a five shot as well.
6. Just a sicknasty picture of the loaded gun and aiming.


joeyay (author)2010-04-23

what the heck this is sad

knexfun101 (author)joeyay2017-04-07

if you ask me, it's actually pretty good!

An Villain (author)joeyay2010-05-15

It was also the first knex slingshot, ever.

knexfun101 made it! (author)2017-04-07

Here it is! It works great! Nice ible, but some of the pictures are blurry?

willdel545 (author)2011-02-12

can u sub the grays cons for reds cons?

ahicks2 (author)willdel5452011-09-17

yes you can :)

videogamemaster (author)2011-07-29

No piece count?!

care-bear-elite (author)2007-09-05


nibuoy (author)care-bear-elite2008-01-04

only took me 2 min.

panzerunit5 (author)nibuoy2008-08-21

me to lol

zmxninja (author)panzerunit52010-06-23

yeah i no

videogamemaster (author)zmxninja2011-07-29

Me four.

me three

willdel545 (author)2011-02-12

great gun
kianda lost the first bullet...

creat0r (author)2010-09-03

60 FEET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Frank knex art (author)2010-08-12


arielook (author)2010-07-05

wow it the beast!!!!!!!!!!!!!

joeyay (author)2010-05-15


TigerNod (author)2009-03-04

It's too flimsy... I pulled the rubber band back and it bended like a bow.

trap freak (author)TigerNod2010-03-05

are you sure that you used gray rods instead of purple rods? the grays are stiff, but the purpules are bendy(happened to me as well). however if you could reconfigure it to be a bow that wouldnt be so bad. 

TigerNod (author)trap freak2010-03-06

Look at the date, you replied to a comment that is exactly 1 year old! I don't have the gun anymore, but I am sure that I used the grey rods, (Back then I didn't have any flexy-rods) and they still bend.

trap freak (author)2010-03-05

if you replace the 8 greys with red connectors you can put additional ammo in without obstructing the flight path of the ammo.

COCOKITTY (author)2009-11-30

What connecters are the 10 grey ones are they the grey single ones or the ones with 2 bits and then the hole

TigerNod (author)COCOKITTY2010-01-13

2 bits and a hole.

knexsuperbuilderfreak (author)2009-09-08

omg this is a good gun i cant beleave i thought this wouldnt get the job done but it does great gun tpak

Bartboy (author)2009-08-10

Someones gotta make a new gun with this trigger....

like desing it to another gun

mrmoneybagss (author)2009-02-28

overall i think the gun looks a little flimzzy

TigerNod (author)mrmoneybagss2009-05-27

It is really flimsy, yes.

TigerNod (author)2009-05-27

Nope, this gun is completely jamless and easy to fire. I have been using it for months now and it is even better then my SPARCCS. The only problem is its accuracy.

TigerNod (author)2009-05-27

Oops, should have deleted that comment earlier. Yes, it was the first ever and it is really good.

skim1 (author)2008-03-15

is there any way I can add a scope without messing up the "catapult"? thanks -skim1

T-Pak (author)skim12009-01-04

jan. 20, 2007, although I made it a long time before that. It was then I discovered this site.

TigerNod (author)T-Pak2009-03-04

So when did you made this?

Wafflicious (author)skim12008-11-28

yes try making it so it can lift up off the top like on a hinge

J4mm3r5 (author)Wafflicious2009-02-07

on SR-V1

Wafflicious (author)J4mm3r52009-02-07

Ye sept sr-v1 has a handle not scope

J4mm3r5 (author)Wafflicious2009-02-08

Yeah but in the vid it says it doubles up as a scope

TigerNod (author)skim12009-01-04

You don't have to put the scope on top, a side mounted scope is also possible

J4mm3r5 (author)TigerNod2009-02-07

like a scoped lee enfield (I got that from COD)

TigerNod (author)2009-03-04

Don't worry, we don't really need more steps then only this one.

TigerNod (author)2009-03-04

Do you really need all that parts?

J4mm3r5 (author)2009-02-07

Ilike it it uses the slingshot system (silent) powerful and is simple (unlike some *stifled cough* SR-V1). Must build

Wafflicious (author)2008-11-29

Today i integrated the disk launcher v.2 onto the side of this... its awsome because in a war if you are reloading you could use the 3 shot disk launcher

Wafflicious (author)Wafflicious2008-11-29


J4mm3r5 (author)Wafflicious2009-02-07

I might do that

Wafflicious (author)Wafflicious2008-11-29

launcher on bottom

Wafflicious (author)2008-03-08

i made mine diffrently but same consept ( i managed to get a clip on it and a crank to pull the alastic back ) and it shoots through my old leather couch ( when i say old its not that old just discontinued)

T-Pak (author)Wafflicious2008-03-09

wow, I would really like to see some pictures of that.

Wafflicious (author)T-Pak2008-11-28

the clip is on the bottom of the gun..... kinda feeds into my hand =) the crank breaks to often but they still r fun to just say i have a crank and clip ;)

About This Instructable




More by T-Pak:EA-KC EliminatorWY-GRN Annihilator Knex Sniper With New Firing System
Add instructable to: