PKG (Pump-action Knex Gun)

This is my first gun that I have made that is truly pump-action. It's pretty sweet.


Looks awesome
Pumps smoothly...ish
Mag capacity 10


Very rarely doesn't fire
Very rarely jams

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Be the First to Share


    • Book Character Costume Challenge

      Book Character Costume Challenge
    • Made with Math Contest

      Made with Math Contest
    • Cardboard Speed Challenge

      Cardboard Speed Challenge

    36 Discussions


    5 years ago on Introduction

    I built it, but mine is all jammy :/ maybe its the rubberband placement, maybe it is the mag, but whaever it is, mine jams every couple shots. Other than the jams, it is a pretty much good gun. I'd prefer the zkar though because it doesn't have as many pieces and doesn't jam although it fires a little slower


    5 years ago on Introduction

    Nice gun :) I'll try to build it. It looks really cool except that you have to use broken pieces (I'll probably substitute) in the pump. About the pump looking non-functional, I saw a grey rod in the mag area. The pump directly pulls the grey rod back, which pulls a few yellow connectors (holding on to one another via broken white rods and a support normal white rod, pic 3), and is all stabilized by red rods in the back. Is that right?

    DJ Radio

    7 years ago on Introduction

    The pump doesn't look like it actually pulls the pin back. Probably does, but doesn't look too believable. Great job on the assembly though!

    2 replies
    didexoDJ Radio

    Reply 6 years ago on Introduction

    Great job on the assembly though!


    That's something you don't see everyday. ;) this wasn't meant to be offensive.