Introduction: Knex Combat Semi Auto Shotgun

Picture of Knex Combat Semi Auto Shotgun

Hello, This is my semi auto shotgun. No, it is not a shotgun but i looks like one so im going to call it.

Note: I post my knex guns for everyone to see, However I don't post my knex guns to be judged and ridiculed. If you have somthing bad to say about my gun, keep it to your self. (I don't think constructive criticism is bad so you can post comments saying e.g this part doesn't work to well here is what i did, thats fine.)

Step 1: Stock

Picture of Stock

Here is the stock. Quite a few people liked it, so i will do this step first.

Step 2: Semi Auto Mech

Picture of Semi Auto Mech

Here is the semi auto mech. Credit to LKmachines. You can visit there website at

Step 3: Mag

Picture of Mag

Build the mag here.

Step 4: Fake Barrel

Picture of Fake Barrel

Build the fake barrel. You can store rubber bands in it.

Step 5: Assembly and Fireing

Picture of Assembly and Fireing

here we assemble the gun.


wezils tuts (author)2014-04-11

add longer barrel and scope u will get semi auto sniper rifle

SumRndmGuy (author)2012-09-03

thank you for this, this was the very first semi auto knex gun i built although i dont recall using the mag part, i modded this thing so many different time =P

An Villain (author)2010-07-02

I'll take the Shotgun to protect Me, or Myself.

MrSillyGuns (author)An Villain2010-09-06


An Villain (author)MrSillyGuns2010-09-12


killersir751 (author)An Villain2010-11-19


An Villain (author)killersir7512010-11-19


killersir751 (author)An Villain2010-11-20


An Villain (author)killersir7512010-11-20


killersir751 (author)An Villain2010-11-22


An Villain (author)killersir7512010-11-29


killersir751 (author)An Villain2010-11-30

wait..... i mean.....

An Villain (author)killersir7512010-11-30


killersir751 (author)An Villain2010-12-01


An Villain (author)killersir7512010-12-02

Open Microsoft Word.
Enter text: =rand (200, 99)
Receive answer. (Double Rainbow Effect.)

sferrl (author)An Villain2012-08-25

holy crap
i typed =rand (200,99) and hit enter
and 478 pages of a crap load of words appears

An Villain (author)sferrl2012-08-27

It was intended to display the appearance of a font and how it looks in paragraph form without requiring the user to type a large amount of text.

sferrl (author)An Villain2012-08-29

well wouldn't one still be typing the same amount of test no matter the font type

An Villain (author)sferrl2012-08-30

No, this is for testing how a font would appear when arranged cohesively, not as a mass of gibberish produced by typing with a forehead, rather than fingers.

beanieostrich (author)An Villain2011-01-16

I tried that, I did not get a double rainbow.

An Villain (author)beanieostrich2011-01-16

I did not say you would get a double rainbow, I said it displayed the "Double Rainbow Effect".

killersir751 (author)An Villain2010-12-03


An Villain (author)killersir7512010-12-03

Did you try it?

killersir751 (author)An Villain2010-12-04

i didn't really get it and what to do, so, no

SonicX 22 (author)killersir7512011-01-11


killersir751 (author)SonicX 222011-01-13

*blows brains out with Spaz 12 shotgun*

SonicX 22 (author)killersir7512011-01-13

btw: Yes

killersir751 (author)SonicX 222011-01-14


c-c-c-c-c-c-combo breaker!


Element Force (author)2012-06-07

No instructions for the stock?

any experienced builder should figure this out no problem

ok i have finished it and it works great

Element Force (author)2012-06-07

Can you use a nother broken connector

JoeyHersh (author)2011-12-13

how far does it shoot?
how many bullets does it hold?
you need to be more specific

SonicX 22 (author)2011-01-11

this shotgun is slingshot powered, so that makes it double awesome!

if you want more of semi auto slingshot awesomeness, go see masterdude. he specialises in awesomeness.

yeah he is awesome!

Sharir1701 (author)2011-05-20

very nice gun... i was building something of the sort just before i found this ible, but then i found it and forgot about my project... very nice. 5* !

danicle (author)2010-11-22

how do you come up with the ideas for these things!?!?

Couple years of experience, and understanding physics.

Millawi Legend (author)danicle2010-11-23


turtlekidlol (author)2011-01-16

i killed my cat with this gun. nice gun btw!

Ouch. You mustve hated this gun afterwards.

Millawi Legend (author)2011-02-26


The Nomlack (author)2011-01-21

You cut the yellow rod wrong. Look at lk machines pic again. At the far left of the connector, the part sticking out, cut about 2 millimeters. It will make work better. Also nice mod!

turtlekidlol (author)2011-01-16

instead of cut tans can we use blues like the one on the bottom?


killersir751 (author)2010-11-19

technically not semi auto because it uses rubber bands as the firing mech and semi auto is where you can fire a whole mag just by pulling the trigger a load of times
if you want an example of a TRUE semi auto (i've tested it myself, it's pretty good) here is a link:
if you haev enough rubber bands on it, it's pretty powerful
i would recommend you build it and tell me if you like it


About This Instructable




Bio: Roses are red Violets are blue If you don't like Motorhead I will kill you. I basically like all rock. ...
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