Knex Full Auto V5




Posted in PlayKnex

Introduction: Knex Full Auto V5

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

Hello! This is my K'nex full auto V5. Some of you have asked for it so i posted it. So, here it is!

Step 1: Stock and Friction Mech

Here is the friction Mech. It slows the Release Mech down.

Step 2: Handle and Trigger

This is the handle and trigger

Step 3: Release Mech

This is the release mech

Step 4: Fake Barrel and Mag

The barrel can be different lengths but i like it this long.

Step 5: Assembly

Here is how to assemble it.

Step 6: Finished!

there you go you have finished. to load put elastics like you would on a normal rbg but when you put a band on turn it back 4 clicks and then put another one on. hope you enjoy!

Step 7: Mods

i will post any mods here



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    hahaha incredible, I am trying to make my own full auto gun for days and now I see I created a mechanism that you came up 2,5 years ago!

    Yes; the gun will not work if you don't.


    Does the Friction Mech cause recoil?

    5 replies

    Yes, quite a bit which i think is cool.


    coool. i'll have a look. btw i'm making a ppsh with your idea. hope that's alright. it has a drum mag that actually works (not like the real one though.). it's just a normal mag with 2 semi circles on each side lol


    OOPS! Sorry i forgot to say. i gave up ages ago lol. it looked so ugly LMAO. I've gone back to gaming, uploading vids of them & listening to dubstep =P

    do you need to cut the rods?

    Hmm... I liked the look of it as a slideshow, so I decided to build it (didn't know about the cut parts :S :S) I finished it, put it through some tests, and found it is the best full auto RBG 'on the market', as well as being a new mech design to boot. BUT This, like all RBGs is doomed to a low ammo count, and each rubber band added also adds pressure, I was using postal (thick red) rubberbands, then old #64s, then skinny bands of the same size, then some really skinny ones, but the maximum it could hold was about 10-13. Another problem was that with the skinny bands, when there were a lot of them, it was harder to pull the trigger, and also it burst fired, whereas when there were few bands, there was barely enough power to activate the friction mech. On the positive side, it is a very good concept gun, and I look forward to seeing the new models this may inspire. 4*

    4 replies

    (4th frickin comment) I am posting a new version that has a way stronger trigger and is smaller and i got it to hold 15 really skinny elastics.

    (lol sorry 3rd comment) i have improved the stock aswell.

    If this was mainly a compliment, then thanks!

    is it really full auto cuz i want to know before i build it. it looks awesome

    3 replies

    No it's Semi-Automatic Here's Why Semi-Auto-All you need to do to fire is pull the trigger for every bullet shot (this gun) Full-Auto-All you need to do is hold down the trigger and the bullets will keep shooting until the magazine (or chain) runs out of ammo.

    What I'm saying is that it fires like a full auto.

    full auto as shot gun or full auto like machine gun style