Introduction: Knex Compact AST Pistol

Picture of Knex Compact AST Pistol
Here is my AST pistol. AST standing for Assault, this is a small Magazine-fed pistol, that is easy to use and has good power.

The main reason I am posting this is because of the trigger. It is a neat trigger I came up with a while ago, and I wanted to put it on a gun; thusly this pistol. The video shows how it works best. Range is
45 - 65 feet.

Hope you like it!

Step 1: Parts List

Picture of Parts List

This is the parts list. It is where I list the parts. The parts you need are listed below.

Green ----- 97
White ------63
Blue ------- 3
Grey ------ 1 (this should really be black)

Dark Grey -- 8
Light Grey -- 5
Red ---------- 4
Green ------- 17
Yellow------ 46
White -------- 9
Orange ------7
Blue --------- 4

Blue Spacer ----- 16
Y Connector ----- 10
Ball Socket ------- 1
Elastics. You will need two small elastics, and however many you want for the ram.

Got those? Lets get started!

Step 2: Handle and Such

Picture of Handle and Such

This is the step for the handle, and the part in front of the handle. Simple.

1: Start with these four pieces
2: Make these four panels. Be sure that one is one yellow shorter than the rest
3: Put them all together with one cross-snapped white rod
4: The shorter one goes in the middle like so
5: Put the four pieces you made first in the spaces so its like this
6: Make these two panels
7: And these two pieces
8: Take one panel and cross snap white rods on it like so
9: Put those bits you made just a moment ago on as shown
10: Put the other panel over like so
11: Put the two parts together
12: Make this little piece
13: From another angle
14: Put it on the piece you already have with a white rod

Step 3: Trigger and Rear Barrel

Picture of Trigger and Rear Barrel

This is a small step, which contains the trigger mechanism that I made. Get to it!

1: Start with these two panels
2: Make these two bits
3: Put them on like so
4: Put those white rods on
5: Get these parts
6: Snap the parts over the white rods like so
7: Put that last piece you have left onto the top like so. This stop the trigger from popping out of the barrel.

Step 4: Top Barrel

Picture of Top Barrel

This is the bar thingy that extends over the top of the gun. Its really simple.

1: Make these two panels
2: Make these rails
3: Put those white rods on one of the panels
4: Put the bits on like so, and put the other panel on top. Sorry, the picture of that got deleted or something. Sorry.

Step 5: Top Barrel

Picture of Top Barrel

This is the part that drops down from the front to make the other end of the slide for the mag. Not too hard.

1: Make these two panels (sorry about the blur)
2: Make these parts
3: Put them on one panel like so
4: Put the other panel on top. That was easy!

Step 6: Odd Bits

Picture of Odd Bits

Here are just a few little parts you will need to make.

1: Ram
2: Close up
3: Take it up really good
4: Make this
5: Make this

You will put these on in the assembley step.

Step 7: Assembley

Picture of Assembley

This is the fun bit. Here we are going to put it all together and make it ready to fire.

1: Exploded view
2: Put the back barrel and top barrel together like so
3: Put the handle on. Pretty straight forward
4: Connect the two trigger pieces so its like this
5: From a angle
6: What it should look like at the handle
7: Put the front on
8: Just in case you have poor eyesight...
9: Put that piece you made before in like so. Put the small elastic on as shown
10: Place a elastic on the trigger like so
11: Put your elastics on the ram as you want


Step 8: Firing

Picture of Firing

Here you will learn to fire your gun. If you have any experience you should be able to figure it out, but just in case...

1: Your gun and your ammo (Yellow rods)
2: Take the pusher-inner thingy and hook it onto the bottom of the gun like so
3: Put in your ammo
4: Put as many yellow rods in as you wish, and then place the pusher-inner back on top of all the rods
5: Pull the ram back until it passes the block, and then let it go
6: Take aim....
7: FIRE!

Repeat pulling back and shooting until the magazine is empty.

Step 9: Finished!

Picture of Finished!

You're done! Yay! I hope you like this gun. Have fun!




DukDukboy101 (author)2017-03-26

Nice gun! It's amazing! I'm going to build it right now!

Made it! It's an amazing weapon!

Linkin_J_Knex (author)2015-09-20

AAAHHH MY FINGERS Umm...I spent aggeeesss making it and it doesn't shoot :'-(

Now it does but jams often :'-(

Wait! I fixed it! More rubber bands + something better to stop the ram(I used an old rubber with a hole in it)

Now it does but jams often

After every shot it jams

krwchampion2 (author)2013-06-24

can we replace some of the y connectors with peach connectors

I_am_Canadian (author)2013-05-04

Ahaha, it kinda went the other way around, this first then Spiff. Thanks a bunch!

metalsonic (author)2013-04-28

this looks like it could be the spiff V2

awsome gun by the way

yamaha2342 (author)2010-05-27

 am from Canada 2!!!!!  

mberg (author)yamaha23422011-06-04

Where in Canada I'm from Alberta

yamaha2342 (author)mberg2011-11-13


Element Force (author)yamaha23422012-09-05

my too

SnapFitPieces(: (author)2009-10-03

In 5 wt is tht

Use proper spelling, grammar and punctuation, and I'll tell you.

i think it said: in picture 5, what is that

maybe............. not

I_am_Canadian (author)2012-05-07

It can often help to take out all the green rods on one of the panels, and then snap in the disconnected panel piece-by-piece. Hope that helps!

Drakencas (author)2012-04-19

i cant do pic 6 how do you do that

I_am_Canadian (author)Drakencas2012-04-20

Just build and follow the notes. All you are doing is sliding the bits and pieces from photo 5 onto the part made in photo 4.

Good luck!

I_am_Canadian (author)Drakencas2012-04-20

Just build and follow the notes. All you are doing is sliding the bits and pieces from photo 5 onto the part made in photo 4.

Good luck!

jakie1234 (author)2012-03-31

He's talking about a gun not that he's from Canada.

I_am_Canadian (author)jakie12342012-03-31


I_am_Canadian (author)2011-06-06

This one? I didn't think it was that bad.

mberg (author)2011-06-04

I want to build your spiff pistol or sat pistol but I thunk theist is better. Whic do u think.

I_am_Canadian (author)mberg2011-06-04

I'd go with spiff.

mberg (author)I_am_Canadian2011-06-05

thanks. (haha. i don't even remember what i wrote."thunk theist ")

~KnexBuild~ (author)2011-06-05

It would be cool if this was slide action.

knexmaster60 (author)2008-11-15

your gun looks relly cool I have not built it yet but I think I will, and I think I can mod it so you dont need tape. O and are you relly from canada

I hope you do! And yes, I really am from cananda.

mberg (author)I_am_Canadian2011-06-04

I know he is from Canada but it's funny because I am Canadian said" yes I am from Canada" it's funny because he said typed it like cananda

hedzup456 (author)2011-03-14

hehe, instead of 1 yellow, 2 or 3 whites....ALMOST SEMI AUTO SHOTGUN PISTOL!

hedzup456 (author)hedzup4562011-03-15

maybe not, youd have to mod the magazine, ill do that so i can win a bet with my mate! £10 if i can make a gun that fires 3 bullets at once, every time

mahmel (author)hedzup4562011-05-22

wait you were just talking to yourself?

hedzup456 (author)2011-03-15

i took spiff into school, became thecoolest guy, then took this into school "remeber the guun yesterday? Meet its BIGGER BROTHER!"
thank IAC
heavy cannon v5 next, metinks

I_am_Canadian (author)hedzup4562011-05-01


Thats pretty neat. Thanks!

Forrasy (author)2010-11-25

Go Canada! xD I could probably make it so when you pull the ram back it doesn't bend and stuff, if I do, do you want me to give you a screeny?

I_am_Canadian (author)Forrasy2010-12-23


Err... Little problem, after exactly every shot the magazine jams.
How to fix? The bullet gets caught on the ram, it is so annoying!

There are a lot of things that might be wrong...

The easiest thing to do would be to build spiff, I think. It never jams :-)

Fred the evil puppet (author)2011-04-01

Just built this, and the heavy cannon v5 today! Well, we can call that a fingers-bleeding day?

I think we can :-)

inergy (author)2010-12-29

I modded the magazine so it wouldn't jam, although you can't rapid fire, you have to tilt the gun up and then down so the ammo is put closer to the firing pin and the aim, the extra ammo should stay down
and made a safety and sight for it

hedzup456 (author)inergy2011-03-15

post the saftey?

inergy (author)hedzup4562011-03-21

It's simple, it's a blue rod stuck through the barrel and a above the middle of the mag, then snap any connector on the side, then do the same to the other side, so remove unsnap on connector, and snap on to the sight i made, or put it in your pocket.

hedzup456 (author)inergy2011-03-23

post the sight lol

inergy (author)hedzup4562011-03-24

Again it is quite simple. All you need to add is a gray 2 way connector and you gotta remove the middle green connector out of the middle of the very front of the gun, or remove the green connectors on the side of the gun and add two gray 2 ways. I will post a pic with what green connectors i am talking about.

inergy (author)inergy2011-03-26

Ok i said i would post a pic, but i no longer have the gun. and i'm having trouble copying the pic. but it is simple enough.

hedzup456 (author)2011-02-27

is thusly a word?

About This Instructable




Bio: K'nex is my thing!
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