K'nex Gun // Launcher



Some what simple, very effective. Includes trigger. About 35 common pieces required.  Shoots about 10 mph.


25 "45° // Gray" pieces

3 "Gray (Longest Rod)" pieces

1 White Piece

1 "Green // Black (Smallest Rod)" piece

5 "Clip // Y Connector" pieces

1 "Red // Black // 90°" piece

8 Mid-sized Elastic (Or whatever works)


Pros :

Fast, effective (
Easy Reloading
Can shoot any piece
Very hard to break


Does not look realistic
No scope // aiming device
Not very accurate


*** SORRY FOR PICTURE QUALITY. If you have any trouble assembling, or any general questions about the launcher please comment.

Step 1: Building the Gun

The Barrel // Base.

Step 2: Trigger

VERY simple.

Step 3: Bolt

The thing you cock and fire with.



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    3 Discussions

    DJ Radio

    9 years ago on Introduction

    Nobody likes these types of guns anymore.  Well at least when they are posted anyways.

    the instructions look nice... but I cant believe that instructabels puts up with this I'd think they'd run out of server space  with all these stupid knex launchers.

    My advice to you.

    look around more look at the top rated instructables then figure out how to make something better.