Picture of fully automatic knex gun (UPDATED)

This gun is based off of bakenbitz idea and i just improved it and changed it around. Its fully automatic. It works by cranking. I made this gun to shot airsoft bbs but thats just because i like that so u can make it shoot something else if you like. It probably shoots about 3 or 4 per second. It comes with a clip that holds about 23 bbs. If enough people ask for the instructable than ill do it. It still needs some work but it doesn't shoot to far but its a brand new design and there is nothing else like it that i can find. hope you like it. please comment on what you think about it and if you upgrade it please tell me thanks.

don't forget to rate and comment

connectors-6 double gray connector
-12 green connector
-26 purple connector
-12 blue connector
-77 single gray connector
-1 ball joint connector
-29 yellow connector
-36 black Y connector
-8 orange connector
-27 red connector
-19 white connector
-11 brown rod connector

-87 green rod
-32 white rod
-26 yellow rod
-5 long gray rod
-1 blue rod
-3 red rod

-2 small gear
-2 big gear

-10 gray spacer
-19 blue spacer


i made a real semi auto knex check it out



hey everyone,
check out my youtube page

Step 1: Body

Picture of body
make this
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andrew.cobill4 months ago
You tell us not to make this gun yet you give us instructions.

what's the range

www1391 year ago

Looks cool! Can't wait to build it!

Jasp3r7 years ago
I've only got a little gear without tan connector hole, so mine slips cuz it isn't attached to the axle. How do I solve that?
Get two stub connectors (small blue things with no hole) and try pushing them close up to the gear
if u use the tan ones with the stubs on them u can connect them in the small holes in the sides of the gears
But then when the gear rotates, it would be blocked by that tan connector which would cause many problems
super glue
chasm Jasp3r7 years ago
You can't
XxsonicxX3 years ago
I need t say this... i isn't fully automatc, its crank action
the grey clip is broken a clip to hold the bb's
danroy993 years ago
Does it work with metal bbs?
arjun13 years ago
does not work
jake scythe3 years ago
it is basicly a gattling gun in rifle size
donnie24 years ago
mine wnt work no matter wat!! :(
As the description says, it's a prototype. I built it too, it is very unreliable.
when i built one it would blow up in my face every time but i will try again. it is ok if you make fun of me for it blowing up.
Ow..... That's... Unfortunate.

I won't make fun out of you. It is a commonly known fact that most full-auto's have a tendency to blow up.
ryanreers4 years ago
if you switched the gears they crank would turn faster
but there would be less torque causing it to struggle under more rubber bands
I added a motor instead of the crank and it became automatic.
flyerminer4 years ago
plz find out a way to just use knex ammo and not airsoft bbs! it'd make meh happy. =D
Spycrab5 years ago
the 'airsoft bb's' thing disappointed me :\
Blackbird175 years ago
sry but i took this apart along time ago. we are moving soon so i cant do anything soon sry
Blackbird176 years ago
i can add a barral to shoot green rods if u want
could you plz send me some pics or a clip on how todo this. thanx
sukinmaru5 years ago
cool, you ought to make a Mulcher from GoW2
Merugop6 years ago
Oh yeah what are those grey parts in the middle
Those grey parts in the middle of the barrel are 3 tan clips.
anres3215 years ago
hey I have made a fully automatic knex gun that works with a totaly diffirent system that is never used before on a fully automatic one. So would you plz tell me wath you think about it ?? here is the URL: http://www.instructables.com/id/Fully-Automatic-knex-Gun-it-really-works-/
snow clones5 years ago
Great gun; try making a high mag, high power, bolt slingshot sniper! I've made one and it goes about twice as far because you use a bullet that slides on the rail, and the power is a slingshot.
i have seen it on you tube im paranid630
joelyboy945 years ago
 Your photos are fine and your guns wicked, but you mite find knex mlcad useful - there are quite a few annoying flaws in the program because its pirate, but if u manage u can make decent images and instructions. im not gonna lie its hard but tell me if u want the program
smattman226 years ago
mine wont fire or pull back far enough.
extreme builder (author)  smattman226 years ago
you must of done something wrong than
i have thick rubberbands. but it doesnt slide all the way foward
I know what you mean. You've gotta add spacers (not connectors or there will be blocking something) here:

extreme builder (author)  smattman226 years ago
i dont know what to tell you. try less rubberbands
your photos arent showing up on the screen but other guns are.  Do you know what that is
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