UKP (Universal Knex Pistol)





Introduction: UKP (Universal Knex Pistol)

About: I've been building and engineering since as far back as I can remember. My first building toys were those wooden blocks, and at age 4, I upgraded to cereal box samples of K'nex. I also participate in sports,...

UKP v3

A project I've been working on "on and off" this initially started off as my Desert Eagle project back in august of last year (forum topic was removed). From time to time I would change a part here, add something there and eventually came to what you see now. Any suggestions are welcome, and don't hesitate to be critical. 

- NEW (at least I think it is) removable magazine system (more in depth below)
- Iron sights
- trigger guard

- 5 round standard clip or 3 round quick clip (a quick clip can be loaded in around 1.5 seconds)
- 20-40ft range
- relatively compact 

- last round occasionally jams
- small mag capacity

The magazine:
- the magazine uses an angled pistol handle sort of like the one seen on the TDS. This angle is slightly greater than the TDS's angle do to a different placement of rods. This increased angle allows for the acceptance of GD1 mags that lock into the handle of the pistol via small cracks in the handle. 



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    It kinda looks like the fallout 3 10mm pistol.

    Why do these peole say it sucks? I think its a great gun by the looks and performance! 5*

    1 reply

    Thank you!


    Thanks! and how so?

    yep, it looks like an usp but not under the barrel part

    it looks a little bit like a USP 45. is that were the idea came from?

    1 reply

    The idea behind this gun was to combine the compactness of the TDS and the removable mag/ larger round of the GD1 (which are both excellent knex guns in their own ways) it was just a bonus that it ended up looking like a USP...


    yea... It pretty much is... but I wasn't going to call it a K18... although maybe I should have...

    Not a new magazine system. Me and Visper made a Micro Uzi with a removable mag like that. Make the trigger block behind the handle, by using a Seleziona type bullpup trigger system.

    8 replies

    Which one of your Uzi's? I want to see... I don't think it locks the same way as mine... and not at the angle my pistol has... because a micro Uzi would have a vertical handle...

    Oh wait it is, sorry. I didn't notice the bullets where vertical. Buy a small spring, that way you can have an internal mag pusher.

    Also, like I said make it block behind the handle.


    do you have a link for it? I looked on Seleziona's profile and couldn't find it... maybe I didn't look hard enough...

    Its on his PP2000. Its a bit hard to miss, but he has posted around 20 ibles, so just click back if it is not there. I could help you with it if you need any help, Selez is on holiday.


    hmm... do you think it would be worth the increased range to change the whole look of the gun? I mean if its only another 5 ft then it might not be worth it... plus... (this part is really bad) I don't know exactly how my gun's ammo feed system works... it just does... lol... somehow a broken orange connector rotates the round from vertical to horizontal directly behind the trigger... also the lach of the trigger mech being right there might make the round fall out... I'll take some internal pictures for you to look at (if you want) maybe you could make a suggestion...

    I'll have the pics ASAP please. I think I know how it works, but it would only work with smooth ended ammo. It would not be five feet range, more like 20ft extra.


    I took the pictures for the Ible, I'll put them up later and then make the Ible...