Project KBS


Introduction: Project KBS

About: Knex builder here at Instructables. I build Guns, and, Roller Coaster. I currently build about 2-3 guns a month. I strive to post quality as well as quantity. If you have any ideas for a gun for me to try ou...

Hello fellow instructablers, and I bring you my one and only........ Project KBS. KBS stands for Knex Bullpup Sniper. I was looking around and though holy fudge, I can't find anyone who's made a Bullpup sniper so here it is. I tried to increase the performance by using the BAR system but does not perform how I was hoping.

Fairly light
Working Bullpup
Looks cool
Uses the B.A.R system
Gets about 35-40 feet
Removable mag
Very comfy

Mag is hard to insert
Trigger is not very reliable (I changed up the trigger so that I would not have to ruin the outer shell so I kept it compact so it does not function right 100%)

So that's it guys, BTW would you guys like me to do a Pros and Cons list or just Stats?

Leave me some feedback because I love to read you guys comments.



    • Woodworking Contest

      Woodworking Contest
    • Stick It! Contest

      Stick It! Contest
    • Pets Challenge

      Pets Challenge

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




    looks a bit like thr Lynx

    I just wanted to share something I made with you that I thought a fellow Bullpup enthusiast would appreciate :)

    I'm still working on making it work better (such as making it take less than 3 or 4 steps to chamber a round and adding an actual trigger) but I made what I'd like to call a pullpup, where the pin doesn't start behind the round (taking valuable space) but instead has a hook on one end so it pulls it out of the chamber and down the barrel, allowing for the chamber to be in theory less than an inch from the end of the stock. it works by pushing a round out of the magazine onto a loader mech, which (after pulling the bolt back) pushes the round up into a chamber, then the bolt comes forward and pulls that round and that round only out. tell me if you think it's anything more than a cool idea so I know whether or not to continue with the build and post an ible :)

    BTW great job on the Bullpup sniper, it looks pretty awesome


    Please post! I think it looks amazing. I would definitely build if there were instructions( if i had enough pieces). I love all your guns and would build them all if i had enough pieces!

    4 replies

    Thanks! This gun is long gone, but within a few days I'm posting a Remington 700 (with instructions) and I think you will like it better.

    Tactical or regular?

    Ok, when it comes out i will check it out!

    I don't like breaking pieces and it kind of makes the project un-makeable for me. I prefer oodammo, i wish people would make a nice oodammo assault rifle that works.

    KnexBuilds B.A.R mechanism. If you don't know what that is just look it up. What do you think of the gun?

    Ah ok, know I know what you mean. I've seen is gun before but I didn't know it had a specific mechanism. As for the gun, I like it. Although I can't see where exactly the mechanism goes...?

    Thanks, I just turned the mech into a three layer so that it would not interfere with the appearance and used my MSMGP mags for clearance for the mech. The back porting is pretty much the same as the BAR though.

    Great gun, I tried to gues what "KBS" meant...

    I didn't guess...

    Thanks! I originally had a bipod on this but since it's a bit shorter than a normal sniper, the bipod looked a bit weird.

    I love it! I have tried the BAR system and I did not really care for it, just not very reliable. Pretty good all the same, one of your best looking guns. I don't care if you use stats or pros and cons, as long as the good stuff and bad stuff is clearly stated.

    2 replies

    Thanks man!! I built the B.A.R and got much better performance than I did once I implied it to my sniper. I could cut out a lot of friction by changing the internals but would make it slightly messier and would require different paneling, thus giving more range.

    Well, I did not build the BAR, I built his pistol that had the same mech. It shot fine, but the rails kept falling apart.