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

Aside from the P90 and the M4A1, the MP5K is probably one of the most attempted builds here at Instructables. I think I counted 20-some versions, but to be honest, I was never really satisfied with any of them. They always seemed to have something wrong with them. One might have a good magazine-well setup, but the grip was in a bad/incorrect position, another had a good grip setup, but the rest of the body was badly done, etc. So I decided to try my hand at the venerable MP5K PDW, and this is what I came up with.

While I am not entirely happy with my version, after all, it does not have a complete front sight, I think that it is a good start. With its nice grip and magazine-well setup, it is a good looking PDW.

- Internal magazine lock
- Comfortable body/front grip/stock setup
- 10 - 20 rd. magazine
- Nice sights
- Nice, sturdy, stock

As of yet, the range is untested, as I have been gone at debate tournaments or busy working on debate, but I'll test it sometime later this week.

Keep and eye out for my brother's 1967 MP5K Prototype later on!

-The Red Book of Westmarch



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    39 Discussions


    My guess would be the blue rod, above the handle and underneath that red connector on pic 3 of the internals.
    I think it connects with a y clip to it, but as I'm not Reddie, I can't know for sure.


    3 years ago on Introduction

    i'm gona try as well... like you I was not completely satisfied with the other versions

    so this is what I will build...

    mp5k 1.jpg

    4 years ago on Introduction

    on the magazine, how did you connect the white connectors together? Or were they not connected? I will be using this magazine in a future build.

    1 reply

    Awsome and have favorited, can't wait for the MP5K prototype, if he posts internal pictures or instructions, it will get a review

    5 replies