Knex Sub-Machine Gun "The SMG3"





Introduction: Knex Sub-Machine Gun "The SMG3"

About: Hey everyone, welcome to my Instuctable, or my Instructables page. Well I hope you like what you see and if you do, don't forget to SUBSCRIBE. I like to build just about anything from airsoft guns to fishing...


Hey everyone, My latest project was a sub-machine gun. It was called the SMG3 because SMG stands for Sub-Machine gun and this was the third version. Well I hope you like it and I will probably be posting an Instructable! Also don't forget to rate, comment, and subscribe if you like it!

  • BlueMullet's Removable Magazine
  • Sights
  • Sturdy
  • True Trigger
  • Comfortable
  • Compact
  • Reliable
  • ironman69's Tactical Rail System
  • Pin Guide
  • Fore grip
  • Range:25-30ft
  • Accuracy:Okay, but not the best
  • Standard Mag Capacity: 16
  • Reload Time:15sec
  • Ammo:Blue metallic connector with a green rod
  • Handle is hollow when the magazine is removed
  • Some-what of a piece hog
  • Sometimes hard to remove magazine



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    We have a be nice policy.
    Please be positive and constructive.




    nice i like it 5* and i made that shell ejecting sniper rifle.

    8 replies

    It's exactly that which made 'Ibles go to the dogs. Everybody rating 5* all the time. We used to be more strict in the good old days... When people had to work for 5*.

    Sadly have to agree. People used to be way more harsh and someone can post the same thing fifty times and everyone humps their leg each and every time. Kind of makes me mad.

    POST POST POST POST PLEASE (+ piece count if you can)

    why is the handle a mag? anyway this is good

    Why is the handle straight? Also the setup is the absolute worst way to put a trigger.

    3 replies

    Cause its comfortable, and no its very comfortable and easy to pull the trigger and im tired of you hating on my guns. You don't know what your talking about you haven't built it. Constructive criticism is ok but your just being a jerk.

    He isn't being a jerk. This set-up of magazine has long been outdated. It is now known that the ammo has more power if the firing pin 'hits' it, not 'pushing' it, as it is in handle-mag guns. Move the mag forward, and make a nice angled handle and position the trigger near the back.

    The way he said it it sounded like it, he should have said it like you did.

    wait does it work becuase i due not see a handle or how your hand could fitt on it.

    4 replies

    yes and my hand does fit and i have a big hand

    i dont belive it becuiase the ram rod is right were the handle is

    um no its not its under the rail