H&K USP .40




This is a my brand new gun, a knex USP .40. It preforms very well, despite it's clunky trigger, and actually has a little more range than my Glock. As far as I can tell, it's completly jam proof; as I have tested it completely, and it has yet to jam.

  • Size: 6.4" x 4.75"
  • Range: ~ 20-30 ft.
  • Accuracy: Very Consistent
  • Pc. Count: Medium
  • Mag Size: 10

Step 1: Handle

This is the handle and mag of the gun, follow along with the pics.

1. Build These.
2. Attach these.
3. Attach the next layer.
4. Add the last parts like so.

Step 2: Body

This is the barrel and chamber of the gun. Follow the pics.

1. Build these.
2. Attach here.
3. Add the final layer.
4. Attach here.

Step 3: Trigger

This is how to make the trigger for my USP, its the same one from my glock.

1. Build / get these.
2. Attach like so.
3. Attach this as well.
4. Add these.

Step 4: Bits and Pieces

This step contains the rest of the parts and workings.

1. Build this.
2. Attach here.
3. Build these.
4. Insert here.
5. Insert here.
6. Add these.
7. Place here.

Step 5: Bands

This step shows the proper placement of rubber bands on the gun.

1. Place band
2. Place band
3. Place band
4. Place band
5.  There is no step five...

Step 6: Loading

This displays how to load and fire the gun. It takes grey clips, and can hold a maximum of 10 clips.

1. Place mag pusher here while loading.
2. Proper loading position.
3. Succesfully loaded clip.
4. Reinsert mag pusher once 10 clips have been loaded.
5. Cock the gun by pulling back the ram. To fire, simply
pull the trigger.


Congratulations, you have completed my USP 40, thanks for building it, and I hope you have lots of fun with it!

Special Thanks To:

* My subscribers
* My brother
* NickAwesome
* Myself
* My crazy cool awesome dog

Stuff To Do With It:

* Shoot targets
* Stare in admiration
* Rate it five stars
* Subscribe to me
* Join the Big Z army
* Start a thermo-nuclear war
* Take over the world
* Etc.



    • Pocket Sized Contest

      Pocket Sized Contest
    • Tape Contest

      Tape Contest
    • Weaving Challenge

      Weaving Challenge

    37 Discussions


    6 years ago on Introduction

    thank you so much please privet message me i love this gun i would like to talk with you some time just message me please


    8 years ago on Introduction

    Awesome gun.... especially how it actually shoots 2 instead of 1 bullets. LOL, I also shot my nephew in the back HAHAHA!

    An VillainSeleziona

    Reply 8 years ago on Introduction

    You could do that, I was thinking get a 7mm steel bearing and stuff it into the circular slot in the gray connectors.

    An VillainSeleziona

    Reply 8 years ago on Introduction

    No, K'nex pieces accept 6mm bearings, which are slightly too small, and 7mm are slightly too large so they will stay put fine.


    8 years ago on Introduction

    Very nice! looks realistic but the handle looks a little uncomfy. I will definatley build this and send pics!!! P.S. 5* :)

    5 replies
    MrSillyGunsBig Z

    Reply 8 years ago on Introduction

    here it is and its great and i dont think its worth taking apart :) ocasionally it puts 2 or 3 bullets into the barrel but i guess its an easy fix THANKS for the great gun!!

    showoff 001.JPG
    Big ZMrSillyGuns

    Reply 8 years ago on Introduction

    np, thanks! By the way, dont forget to clip off the last inch of the rod, if you dont want it to stick out of the barrel like that :)

    MrSillyGunsBig Z

    Reply 8 years ago on Introduction

    I'd rather not becuase thats my only black rod :o i use the same ram for everything :P

    Big Z~KGB~

    Reply 8 years ago on Introduction

    Actually, no, it is a USP 40. While less popular than a USP .45, the USP .40 is still a completely different gun, or, at least a different model. Sorry if there was some confusion.

    ~KGB~Big Z

    Reply 8 years ago on Introduction

    ok, no bother... lol, i compared it to my airsoft usp.45 and they look identical, thats how i was confused, lol!