Introduction: Semi Automatic K'nex Gun

Picture of Semi Automatic K'nex Gun

This gun fires the small green/black pieces about 10 ft or so. It has a magazine size of about 40 pieces. Unfortunately it can jam often if you load too many pieces into the magazine at once, you also have to cut 2 orange/brown connectors in half. It also isn't very powerful. This is my first insructable so please tell me how I can improve on my instructables. Also tell me any ways to improve this gun. Thank you.

P.S. The attatched file has pics of the gun that are used in the instructable in bothe big and small sizes.

Step 1: Barrel and Breech

Picture of Barrel and Breech

Create the piece in the pic. This will be referred to as the Barrel.

Step 2: The Barrel (cont.)

Picture of The Barrel (cont.)

This is the back of the Barrel. Just add 7 grey/yellow connectors with 6 green/black rods on the back ones.

Step 3: The Base

Picture of The Base

This step is adding 6 red/grey connectors with 6 grey/yellow connectors. On the grey/yellow connectors you should have 2 of the red rods. Also add a blue rod on the red/grey connectors.

Step 4: Base (cont.)

Picture of Base (cont.)

This piece should be attatched to the front of the BASE snd also the front of the BARREL.

Step 5: The Magazine

Picture of The Magazine

Add about* four orange/brown connectors to the BREECH.

*I say "about" because the Magazine size is adjustable

Step 6: Magazine Sides

Picture of Magazine Sides

This step is pretty self explanitory. The length of the piece depends on the length of the piece from the last step. Also don't forget the top of the piece on the right.

Step 7: The Magazine (cont.)

Picture of The Magazine (cont.)

Add the pieces from the last step. Note that the gun is pointing LEFT in the first pic and RIGHT in the second pic.

Step 8: The Magazine (cont. (yes, Again))

Picture of The Magazine (cont. (yes, Again))

This step is adding a 2 blue rods with 2 knex hands on each rod to the bottom of the MAGAZINE.
Also add 2 grey/yellow connectors to the BASE.

Step 9: The Ram

Picture of The Ram

The ram is a red rod with a joint thing at the back and 2 orange/brown brown pieces on it. Also add a piece that I can't really explain except that it is used with gears a lot.

Step 10: Ram Installation

Picture of Ram Installation

Put the ram in the back of the BARREL. You can use different rubberbands, I used a band from a head of broccoli. The rubberband goes from the very front of the barrel to the joint piece on the back of the ram.

Step 11: Handle

Picture of Handle

This piece is very simple. It is 6 red rods with 6 red/grey connectors on each side. The connectors on the sides should each have a blue piece attatched.

Step 12: Attatch the Handle

Picture of Attatch the Handle

The title and pic says it all.

Step 13: Extras

Picture of Extras

If the gun gets jammed you can either shake the gun a bit or poke through the slots in the sides of the magazine with a rod. The slots will also help remove any bullets that don't fall horazontally into the magazine.

The pic shows KILLERK's gun with a trigger I attatched to it (please note that my gun is slightly different from the one in KILLERK's instructable).

Step 14: Loading

Picture of Loading

I don't have a video for this step, put I have lots of pictures, sort of like a video, but with less pictures.

1) Get some green/black connectors.

2) Put the connectors into the magazine horazontally, make sure it IS NOT vertical, as this will result in jamming and/or breaking pieces.

3) Now you should squeeze the sides of the magazine or, better yet, put a small rubberband on the sides of the magazines so that they are constantly squeezed. Although this may sound odd, it should be done because otherwise the gun will jam a lot more often.


Mepain (author)2007-11-20

OMG!! THIS ISN'T SEMI AUTO! +P I had the need to say something totally pointless and random... LEAVE ME ALONE!!! +P

phantom212 (author)Mepain2010-03-04

atually it isnt semi-auto semi auto is wher you dont even have to cock anything back and you get a shot for evey pull of the trigger until you run out of ammo. so you are right

Whaleman (author)Mepain2007-11-20

Never! Land! That is where Michael Jackson lived!

Mepain (author)Whaleman2007-11-21

Yeah, were all gonna be destroyed in 50 years.

Whaleman (author)Mepain2007-11-21

Yeah, Carrot Top is creepy.

Mepain (author)Whaleman2007-11-21

No, I don't have one. Sorry. +(

Whaleman (author)Mepain2007-11-21

Methinks I see a random chat coming on, yeah?

Mepain (author)Whaleman2007-11-21

Yes, I do like muffins.

Whaleman (author)Mepain2007-11-21

Ekki-Ekki-Ekki-Ekki-PTANG. Zoom-Boing. Z'nourrwringmm

Mepain (author)Whaleman2007-11-21

Whaleman (author)Mepain2007-11-21

Obviously you haven't been watching many Monty Python movies, or plays. In Monty Python and the Holy Grail, the Knights Who Say Ni! demand a shrubbery from King Arthur. Once he does, they change there name to The Knights Who Say Ekki-Ekki-Ekki-Ekki-PTANG. Zoom-Boing. Z'nourrwringmm, and demand another shrubbery, slightly higher than the other, but not too high or it will detract attention from the original shrubbery, and they also demand that King Arthur chop down the biggest tree in the forest using a dead salmon.

Oblivitus (author)Whaleman2008-07-06

There is a video online of king arthur and the black knight battling with lightsabers. It also has Star Wars sound effects and the Black Knight has Vader's voice. lol

ILIKEPIE333 (author)Oblivitus2009-09-29

Come back here and I'll bite your kneecaps off! (I have a shirt)

dsman195276 (author)Whaleman2007-12-16

finally someone who likes that movie... coconuts. i should make a instructable on how to make the sound of a hourse with coconuts!!!!!

Whaleman (author)dsman1952762007-12-16

Meh, if you rent the CD you can see a video on how to do it.

dsman195276 (author)Whaleman2007-12-16

yea i got the dvd. it has that on it. at the end it says " next up: 1000 ways to use the inside of a coconut". lol.

Whaleman (author)dsman1952762007-12-16

Correction: 1001 ways to use the inside de la coconut.

dsman195276 (author)Whaleman2007-12-17

lolololol. were did you get a coconut any.

DrWeird117 (author)dsman1952762008-12-28

Giant Eagle.

Wafflicious (author)dsman1952762008-12-10


stale56 (author)dsman1952762008-05-18


DrWeird117 (author)Whaleman2008-12-28

"Your mother...was a hamsta! And your father smelt of ELDERBERRIES!"

Wafflicious (author)Whaleman2008-12-10

WE ARE THE KNIGHTS WHO SAY NI! "never in my day have i seen a person so horrid who would ni at an old women!"

j-chode! (author)Whaleman2008-08-06

"and you must chop down the mightiest tree with, A HERRING!"

Mepain (author)Whaleman2007-11-22

Instructables Robot!

Whaleman (author)Mepain2007-11-22


cobra (author)Whaleman2008-02-07


cobra (author)cobra2008-03-04

Koopa Koopa football players!

DrWeird117 (author)Whaleman2008-12-28

Made by CHING! Dowdy dodo Industries.

cobra (author)Whaleman2008-02-07

Carrot Top ate my hamster and he wouldn't give it back.

Whaleman (author)cobra2008-02-07

That's nice to know.

sdds (author)2009-03-27

i shot 56 feet

Ghostsniper (author)2007-08-06

u no anyone who is

Hitman 7 (author)Ghostsniper2007-08-26

i made a good mag for a small 14 shot rifle that i made

twenglish1 (author)Hitman 72008-01-19

how did you make that

Ghostsniper (author)Hitman 72007-08-27

thats ok now i got a machine gun now

Whaleman (author)Ghostsniper2007-08-06

i dunno, mabey mepain or faust, or loosewire

Ghostsniper (author)2007-08-06

Im tryin to create my first instructable but im having a hard time designing a magazine for it. can u provide suggestions? PS its a semi auto

gunmanx (author)Ghostsniper2007-08-15

true semi auto? or does it just hav a magazine...

Ghostsniper (author)gunmanx2007-08-16

it has a mag but im tryin to get it to auto load a shell and now its on instructables (GHost's 22-250 target rifle KNEX)

gunmanx (author)Ghostsniper2007-08-16


Whaleman (author)Ghostsniper2007-08-06

I am not very good at making magazines, sorry.

Danny (author)2007-03-16

are you left handed? because i prefer the handle on the other side

Whaleman (author)Danny2007-03-16

sort of, i write with my right hand, but i also wear my watch on my right hand. I also do a lot of other things with my left hand that most right-handed people do with their right hand.

Mepain (author)Whaleman2007-06-08

So do I...

gibbo_gunner2496 (author)Mepain2007-06-27

same as

Knex Freaky Maniac (author)2007-06-15

Thanks Man,

Knex Freaky Maniac (author)2007-06-15

I'm a little confused about the part..

I added some of those yellow boxes around the pieces that you need to add, the two grey/yellow peices that you add were in some of the previous pics because I forgot to take them off. Hope This Helped!

not-killerk (author)2007-03-30

thats not semi-auto...u have to pull it back to shoot it, there is no trigger, but still good stuff.

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