Knex 8-shot Semi Automatic RBG (rubber Band Gun)




this is an 8-shot semi auto rbg that i made after looking over some other designs. It uses the 8 cogwheel rubber band gun fireing mechanisim that lots of other ones use.

Step 1: Construct These Parts

You will need these peices: (numbers are approximate)

green 15
white 3
blue 12
yellow 4
grey 8

green 17
white 3
blue 2
yellow 10
grey 12
tan hubcaps 6

Step 2: Add the Barrel to the Body

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Step 3: Add Cogwheel

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Step 4: Add Side Parts to the Body

Step 5: Add These Other Parts

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Step 6: Add the Rubber Bands

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Step 7: Add Duct Tape

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Step 8: It Should Look Like This

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Step 9: How to Load and Fire

Put one rubber band on the tip of the barrel and stretch it back onto the white rod on the cogwheel the is straight up. the while holding the cogwheel release the handle part a bit forward and pull the cogwheel back until the next white rod touchs the handle bit and reapeat. To fire it, all you have to do is use the rods on the cogwheel at the bottom of the gun as triggers. Pull it back until it fires and the handle should stop it from firing the whole magazine. However if you put on about 6 or more rubber bands it can sometimes fire 2 or 3 rubber bands at a time. So put a little bit of pressure onto the handle when you fire.



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    31 Discussions


    8 years ago on Introduction

    cool... instructions (pictures) not the clearest in the world, but I could figure them out well enough


    Reply 9 years ago on Step 8

    I'm not quite sure this dude's account is quite.... active. Btw, i'm still trying to get this thing to work, I don't know where to put the rubber bands.


    11 years ago on Introduction

    looks a cool gun but im not a fan of rubberband guns they kinda suck. Heres one i made it pretty cool i tried to change it to rod or bb shooter it didnt work

    3 replies
    Madrias357GUN MASTER

    Reply 9 years ago on Introduction

    Agreed! I made one that's not Knex, but that's just for durability. I have nothing against Knex, I just don't like how easy it is to break the guns made with it. That said, I'd have to say that this one could be a little better. It's not bad, but not great, either.


    12 years ago

    in my experiance guns that fire elastics dont work but guns that fire rods do make this fire rods then ill give it a + rating

    2 replies

    10 years ago on Introduction

    Hey Kickback, you should put my escapement trigger (click on my name, it's the only one there) on your gun and modify your sprocket with green rods, it will allow you to shoot one rubberband at a time plus it hardly ever missfires.

    Kaiveni make shooting things

    Reply 12 years ago

    i made the gun and mine fire perfectly. you must be a lousy constructer, squirel boy!