Introduction: 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

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

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

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

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

Step 5: 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

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.

Comments

author
joeyay (author)2010-04-23

what the heck this is sad

author
knexfun101 (author)joeyay2017-04-07

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

author
An Villain (author)joeyay2010-05-15

It was also the first knex slingshot, ever.

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

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

temp_1591553552.jpg
author
willdel545 (author)2011-02-12

can u sub the grays cons for reds cons?

author
ahicks2 (author)willdel5452011-09-17

yes you can :)

author
videogamemaster (author)2011-07-29

No piece count?!

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

HARDEST STEP EVR!!!! TOOK ME 50 MIN lol

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

only took me 2 min.

author
panzerunit5 (author)nibuoy2008-08-21

me to lol

author
zmxninja (author)panzerunit52010-06-23

yeah i no

author
videogamemaster (author)zmxninja2011-07-29

Me four.

author

me three

author
willdel545 (author)2011-02-12

great gun
kianda lost the first bullet...

author
creat0r (author)2010-09-03

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

author
Frank knex art (author)2010-08-12

look:D

P8125625.JPG
author
arielook (author)2010-07-05

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

author
joeyay (author)2010-05-15

oh

author
TigerNod (author)2009-03-04

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

author
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. 

author
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.

author
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.

author
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

author
TigerNod (author)COCOKITTY2010-01-13

2 bits and a hole.

author
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

author
Bartboy (author)2009-08-10

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

author

like desing it to another gun

author
mrmoneybagss (author)2009-02-28

overall i think the gun looks a little flimzzy

author
TigerNod (author)mrmoneybagss2009-05-27

It is really flimsy, yes.

author
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.

author
TigerNod (author)2009-05-27

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

author
skim1 (author)2008-03-15

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

author
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.

author
TigerNod (author)T-Pak2009-03-04

So when did you made this?

author
Wafflicious (author)skim12008-11-28

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

author
J4mm3r5 (author)Wafflicious2009-02-07

on SR-V1

author
Wafflicious (author)J4mm3r52009-02-07

Ye sept sr-v1 has a handle not scope

author
J4mm3r5 (author)Wafflicious2009-02-08

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

author
TigerNod (author)skim12009-01-04

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

author
J4mm3r5 (author)TigerNod2009-02-07

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

author
TigerNod (author)2009-03-04

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

author
TigerNod (author)2009-03-04

Do you really need all that parts?

author
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

author
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

author
Wafflicious (author)Wafflicious2008-11-29

look

instructables pictures.jpg
author
J4mm3r5 (author)Wafflicious2009-02-07

I might do that

author
Wafflicious (author)Wafflicious2008-11-29

launcher on bottom

instructables pictures.jpg
author
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)

author
T-Pak (author)Wafflicious2008-03-09

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

author
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

16,591views

21favorites

License:

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