Introduction: The Knex Snapper

Picture of The Knex Snapper

This small yet powerful gun for its size is small enough to fit into your pocket! It uses minimal pieces and provides a nice *snap* sound when fired. This is my first instructable ever so please try to keep the comments on the nice side. This gun shoots about 30ft. Feel free to mod it and add things but please give me credit if you make an instructable!


Step 1: Pieces List

Here is a list of the pieces you will need- I found them al in a value tube at target for $20


4 Yellow Rods
3 White Rods
4 Green Rods


2 Orange Connectors
2 Yellow Half-Moon Connectors
2 Red Connectors
6 Light-gray Connectors
8 Dark-gray Connectors (I ran out of the dark-grey colored ones so I used purple connectors. Same thing, different color.)


2 "Y" connectors

33 Pieces in total

Step 2: The Handle

Picture of The Handle

Now to construct the handle

Step 3: The Barrel

Picture of The Barrel

Now we will build the main part of the gun. The Barrel!

Step 4: The Ram

Picture of The Ram

This is the easiest step

Step 5: Put It All Together

Picture of Put It All Together

Follow the pictures

Step 6: Rubber Bands

Picture of Rubber Bands

For this gun I used 2 #33 Rubber bands. Follow the pictures

Step 7: Having Problems?

Picture of Having Problems?

As I finished this design, i noticed if you point the gun down with a bullet in, the bullet will fall out. Here is my solution.


Narwhal 544 (author)2015-05-29

It's good for close combat.

ethantank15 (author)2015-03-29

this just falls apart but if you use a weak band it dosint and it still goes quite far

good one

dsman195276 (author)2008-07-06

:-( :-( ok, for starters: 1. this gun is not powerful unless you put over 15 rubberbands on the firing pin. 2. this gun is really simple 3. it is a basic block trigger 4. it stinks.

We must think alike or something I just said stuff like that in my comment. =:D=

i guess.

DrWeird117 (author)dsman1952762008-10-11

I am truly sick of block trigger complaints.

ilpug (author)DrWeird1172010-11-12

be nice people. this is a basic gun. its well made, and its a good ible. just because it cant kill small animals or break bottles doesnt mean its a valid gun.

NYPA (author)dsman1952762009-08-27

Well That's your opinion isn't it?

"it stinks" Ouch!

sorry, was that to mean?

Nope, just right!

I think it was too mean.

Perhaps a tad :-p

Stavroz (author)dsman1952762008-09-26

That's cruel.

DrWeird117 (author)2008-10-11

I have an aunt who is younger than me.

mettaurlover (author)DrWeird1172009-07-25

technically i'm my own uncle.

DrWeird117 (author)mettaurlover2009-07-25


mettaurlover (author)DrWeird1172009-07-25

my grandparents adopted me and my sister from my dad, making my dad my brother. make sense now?

Smasher555 (author)mettaurlover2010-07-22

I don't know what your talking about, so here is a bunny with a pancake on its head:

mettaurlover (author)Smasher5552010-07-22

Are you just hunting down my comments to annoy me? Because you're doing a good job of it. Especially on a comment OVER A YEAR OLD. Flagged as spam.

Smasher555 (author)mettaurlover2010-07-22

SORRY, it wasn't supposed to be offensive or anything in that nature, I just thought it would be funny. A bunny with a pancake on it's head? rofl

mettaurlover (author)Smasher5552010-07-23

You are apparently searching through my comments as evidenced by the fact that you replied to a comment not directly visible on my front page.

Smasher555 (author)mettaurlover2010-07-24

I was viewing the instructable and I always look through the comments to see what people are saying to see if it's worth building. And I'm NOT a spammer.I was looking on YouTube one day and found the slide action pistol and the video said to go to to view the rest of the instructions, found that this was an interesting website so I signed up in May. God damn I'm just a normal person!

mettaurlover (author)Smasher5552010-07-24

Makes sense. Still, if you've been here since then, you'd know that three months is about the acceptable time limit for replying to comments if you weren't originally involved.

DrWeird117 (author)mettaurlover2009-07-25

Oh. Okay, then. You're your own uncle.

mettaurlover (author)DrWeird1172009-07-25

it's also confusing because technically your sibling's parents are your parents and since my father is my father and my brother at the same time he's his own father.

DrWeird117 (author)mettaurlover2009-07-25

What are holidays like with you guys? :D

mettaurlover (author)DrWeird1172009-07-25

pretty normal, actually. we just use that little piece of info to amuse people. by the same logic, i'm my own father.

DrWeird117 (author)mettaurlover2009-07-26

Oh, my God. You are! That is really pretty cool!

mettaurlover (author)DrWeird1172009-07-26

yep. hey, what time sone are you in? if it's the time zone chicago's in, then you have an equally screwed up sleep schedule or you don't have to wake up early...

DrWeird117 (author)mettaurlover2009-10-17


ol987986 (author)mettaurlover2009-10-03

omfg ur right

mettaurlover (author)ol9879862009-10-03

It's fun.

Sanity is optional. That's why I don't have any.

ol987986 (author)mettaurlover2009-10-03


smilee (author)DrWeird1172009-07-25


DrWeird117 (author)smilee2009-07-25

LOL, randomness!

Smasher555 (author)2010-07-22

It's not even a bullet lock, its just basically a piece holding the bulet in

mettaurlover (author)2009-07-25

i once made something like this. the difference was that it was true trigger and had an awesome ammo-storing handle.

Shredder543 (author)2009-07-06

I like this little thing... Very high power compared to it's size I built two and I love em =) 5/5

Jackp5 (author)2009-07-03

i made a model like this before but this one is better Great Model

talons95 (author)2009-06-16

do you need the tape

fortheheckofit (author)2009-05-27

this is a pretty good design for a basic block, but it's still a basic block i'll give it 3*.

cheesekid411 (author)2009-04-20

sick i just cant figure out how to shoot

wussap (author)2008-07-06

dont all knex guns "snap" when fired?

Knex Lego Maniac (author)wussap2008-07-08

not the SR-v1

SR-v1 is a sling action gun right? Unlike the regular ram hitting onto something

*revised* all ram guns snap when fired.

apples!!!!! (author)wussap2008-07-06

i was just thinking that...

DeAzncy (author)2009-01-21

i actually made it... i also make roller coasters, so i have lots of knex. i used strong rubber bands too, so that might help with the gun's power.

DeAzncy (author)2009-01-19

GREAT POWERFUL GUN!!! just finished making it and it is awesome! thanks man.

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