Bullpup K'NEX Gun: Quarrel (R6)

About: K'NEX gun builder here at Instructables. More or less retired from the community, but I still pop in now and again.

For the longest time, Bullpup rifles have been a "passion" of mine. From their inherently long barrels, magazine setup, and grip positions, Bullpups are guns awesome. Sadly, many of the advantages (if not all) of real Bullpups are wasted on K'NEX guns (TheRacker talks about this here: https://www.instructables.com/community/Why-Knex-bullpups-are-mostly-useless-and-a-stupi/) All the same, Bullpup guns are fun to mess around with, fun to build, fun to shoot. What more could you ask for?

My original Quarrel (nick-named "Vengeance"), loaded the magazine in the top of the gun, and had room behind the grip for an extra magazine. This version does not load the mag into the top of the receiver, nor does it have a space for an extra magazine behind the grip - because that is where your primary (loaded) magazine will go.

- Bullpup mech, based off of the Reliable
- Comfortable grip
- SUPER sturdy
- Great pin-pull
- Nice sights
- Good range: at a "flat angle" 40 - 50 ft., at a 45 degree angle 70 - 80 ft.
- Easy configuration (you could remove the stock entirely and make it a SMG/carbine)

While a Bullpup setup is nice for slingshot guns, it is rather useless for a "simple pin" gun, and the amount of pieces and the length of the gun overall defeats the purpose of a K'NEX gun.

Video and internals will be up soon!

Enjoy, and tell me what you think!

-The Red Book of Westmarch



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    63 Discussions

    Probably the weirdest bullpup rifle I have ever seen but it looks good. I myself will be making a bullpup rifle in June and I will also post instructions for it.

    4 replies

    Well I could tell you Red but that would be too easy. You have to wait and see, besides I like to surprise people and subscribers with my skills and my amazing instructions. But I have nearly finished the Dragunov and KAP-40 reviews ready for May.


    4 years ago on Introduction

    Very nice! Not as complex as I originally thought it was but nonetheless interesting! I'm going to have to build a bullpup now... =P

    8 replies


    Just an idea, ( I just tried and failed this weekend ) How about a bolt action bullpup? It would be perfect, because when the chambering rod pushes the round forward it would get more distance from the firing pin giving it more range. Just a idea I thought you might be interested in.

    I actually built this idea already, but it's so ugly even for my standards and it doesn't work correctly due to pin not hitting the round (too long body but I can't shorten it due to mag location) so it'll disappear, never to be seen again...as most failures do. lol

    ranting again, I'll take pictures of mine if your interested in trying to build one of your own.

    I'd love pictures, but I probably won't try that project out for a while, I have a Mauser SP66 right now, and I am contemplating a semi-auto next... Not sure how it will turn out...

    Well if you pull off a semi-auto I'll be first in line to build it! I'll also post some pictures here when I get home. They'll probably be posted here as to not insult your orangeboard, and everyone's eyes! lol.

    Well I hope your SA will turn out too! Anyway I took my bolt action bullpup apart, it offended my eyes too much (seriously it was that bad). I may try it again but I'm working on another project, Project Mohawk. A horizontal magazine that loads the yellow rods vertically ( so the gun is looking quite large ) It's one of those crazy ideas I recently had. Crazy ideas like this have led to my building of Springbreaker and Buzzsaw so since crazy to me seems to translate to cool and even mind blowing ( Buzzsaw ) I'll build it and see what comes together.


    4 years ago

    Nice gun! Nice chalk heart too. Did you draw it? Haha.

    I'm beginning to recognize that arrangement of cobbles.

    4 replies
    Lucas The Boss

    4 years ago

    Nice gun I have never built a bullpup, would you have a suggestion on one I could build to get a feel for the mech because I don't have near enough pieces to build this one.
    Over all in my opinion this gun is a great gun