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Heckler&Koch MP7 PDW (Working)
A model of the MP7 Personal Defense Weapon - shoots Lego rods
About this creation
This is the latest addition to my armory, the Heckler&Koch MP7. The MP7 is classified as a Personal Defense Weapon, which means it was primarily designed for non-combatants like cooks and engineers. However this weapon was also quickly adopted by Special Forces in several countries.



My model features:
- working firing mechanism that propels 3 stud long technic axles. Max range is about 20-25 feet (6-7 metres). However most bullets reach around 15-20 feet (5-6 metres),and most of the bullets don't follow the same trajectory, but I'm working on that.
- 11 round magazine capacity
- empty cartridge ejecting after shot
- usable foregrip
- pistol sights that can be flipped up to create rifle sights

That's about it. There is no fire selector and the stock cannot move, as there simply was no space (because of the mechanism) to put either a working fire selector or a retractable stock in.
The gun might be a bit blocky but that's just how it is, I can't change it without removing the entire mechanism...
Well, have fun looking at my creation, I have tried to explain everything as well as possible.


NB: I will not make instructions. Don't Ask Please.
NB 2: Please leave a review, or at least rate my creation. Constructive critisism is always welcome and I'll be glad to answer any questions.


Right side


Front. Notice the air vents and front grip.


Ejection port & trigger.

The following pictures are some different views of the MP7.










Down the sights (pistol sights).


The pistol sights can be flipped up to create rifle sights.


Rear sight.


Front sight.


Clip&Bullets.


Clip goes in like this...


The piece with the rubberband attached to it will push the clip up.


There is now a round in the "chamber"

The following pictures will show the inside of the weapon, where the firing mechanism is placed.












The spring is attached to a stick and because of that it doesn't bend while being compressed. The spring I used is commonly found in ballpoints. Some ballpoints have bigger springs than others, I'd say the bigger the better, however it needs to fit around the stick and it needs to fit inside those black tubes I used as cartridges.


Notice the bended piece in front of the clip. This piece will move up when the spring is fully compressed against the bullet in front of it.

The following pictures show the firing process in "slow-motion". When the spring is completely compressed against the technic axle in the black tube in front of the spring, the piece in front of the axle moves up and the axle is shot out of the gun by the spring. Afterwards the empty black tube is pushed out by the tube with axle below.








The process ends by ejecting the empty cartridge and a new round is now pushed up into the "chamber".

Thanks for looking at this creation! Please rate it if you liked it.

In response to Tom's question:
You are right this can happen, if you use rubberbands that are too weak/strong the mechanism might not work properly and the spring could get squished like you mention. I used a fairly strong rubberband to pull the spring back after each shot, but not so strong it is hard to pull the trigger.

For the piece that pushes the clip up I would suggest a rubberband long enough so it can push the clip all the way to the top but weak enough so it doesn't squish the spring afterwards. The thought behind this is that the spring is pulled backwards first and then the clip moves up instead of the other way around so that the clip squishes the spring and the mechanism cannot move back after a shot is fired. It also helps to have some spare room left between the clip and the spring when it is in resting position so that when the spring is pulled back after a shot the front end won't get stuck because it is almost directly placed against the clip.

In response to Carlo's question:
The smooth beam that holds the bullets does in fact go through the top of the gun. I think you might be able to see on some of the pictures that there is a little gap in the rail on top of the weapon. After 5 or 6 shots or so the beam comes out of the top of the weapon, which looks kinda weird.
The beam can move up along the right side of the upside down roof brick (see the firing mechanism pictures)

However, in my newer models this doesn't happen anymore, (I don't know if you have seen any of them), they do not use a clip anymore. Instead they hold single rounds stacked on eachother. You might want to take a look.



Comments

 I like it 
  October 20, 2013
cool mp7 i love to use it in black ops 2
 I like it 
  July 5, 2013
very nice gun can u send me the instructions too shalva456654@walla.com
 I like it 
  April 2, 2013
I have build it from the pictures. Its already possible.
  July 9, 2012
Sick bro can u send me the instructions too conhug06@aol.com
 I like it 
  July 9, 2012
Sick bro can u send me the instructions too
 I like it 
  March 12, 2012
can you send me instructions
 I like it 
  February 5, 2012
Great work as usual. And cant you all read? he said no instructions!
 I like it 
  January 21, 2012
can you send me instructions please cause i'm really want that gun and i hope i can make i really like that gun
 I like it 
  January 19, 2012
nice man, could you send instructions to xdew@live.nl ?
  November 19, 2011
omg this is amazing. great work. could you plz send me instructions my email is adamroderick98@gmail.com
 I like it 
  October 31, 2011
this is just incredible!! Could you send me the instruction at ian.beaurain@laposte.net
 I like it 
  September 11, 2011
pls instructions to mark_mart23@hotmail.com
 I like it 
  September 11, 2011
pls instructions to mark_mart23@hotmail.com
 I like it 
  August 27, 2011
can u send me the directions plz my email is: wiljack_22@msn.com
 I like it 
  June 11, 2011
awesome gun! love that it actually works! congrats on MOTD!
  June 11, 2011
hey can u send me instutions you said u will anser any quwstion
 I like it 
  June 11, 2011
Awesome mechanism, and awesome gun! Congratz on MOTD!
 I like it 
  June 11, 2011
simple amazing congrats on motd!
 I like it 
  June 11, 2011
very nice creation, do you have a video of it working?
  June 11, 2011
I was very encouraged to find this site. I wanted to thank you for this special read. I definitely savored every little bit of it. http://www.seobaba.com/seo-packages/seo-packages.html
 I like it 
  June 11, 2011
I think this is cool! But does Cole Edmonson mean "terrific" as a negative or positive??
 I like it 
  March 5, 2011
can you please send instructions to hpbronze@gmail.com
  February 4, 2011
send instructions chris_kul_sant@hotmail.com
 I like it 
  November 5, 2010
Can you pls send me the instructions on pprizee@gmail.com
 I like it 
  July 18, 2010
I have use your idee so i hope is okay!!!
 I like it 
  March 13, 2010
A terrific model! Do you use real-life measurements in building your guns?
 I like it 
  February 25, 2010
send me insturctions a ps17211117@hotmail.com i love your creation. i think this is the only mp7 that shoots lego bullets,not rubber bands.lol
 I like it 
  December 29, 2009
its very cool!finally i get how a bullpup mechanism works!thanks a lot i will try to make one
 I like it 
  December 19, 2009
email me to aldshin@gmail.com ty
 I like it 
  December 19, 2009
email me to aldshin@gmail.com ty
  October 1, 2009
send insturctions to fransir@live.com please and thank you
  August 5, 2009
Can you send me instructions for the MP7. Don't worry. I just need it for self defence. send to js_stamaria@hotmail.com
 I like it 
  July 29, 2009
can you please send me instructions for this gun at jacobwattson@yahoo.com
 I like it 
  July 1, 2009
ECHT GENIAAAAAL!!!!!, hoe heb je het uitgevonden om zoiets te maken want ik probeer ook al heel lang een lego pistool te maken(ook MP7 want het is mijn lievelings wapen) maar ik heb paar vraagjes_#1-wat is dat gekleurde ding dat je gebruikt_#2-Zou je PLEASE een instructie kunnen maken en als laatste-zou je me als het niet te veel moeite kost een beetje kunnen uitleggen hoe zo een mechanisme werkt want dan kan ik miss wel mijn eigen maken^^ alvast bedankt
 I like it 
  June 9, 2009
it's the best of all your creations
 I like it 
  June 6, 2009
dude, the guns you make are the best i have ever seen!! i have a question tho. where can i get a good spring?
 I like it 
  April 14, 2009
Dude, it looks better than the real thing.
 I like it 
  April 3, 2009
AWESOME!!!!!
  December 1, 2008
i've tried to make it but it doesn't work
 I like it 
  October 29, 2008
Out Standing engineering
 I like it 
  October 23, 2008
isnt the MP7 the H&K'Galaxy',that wat i know it as
 I like it 
  September 16, 2008
THAT IS THE BEST MP7 I HAVE EVER SEEN!!!!!!!!!!!! It looks more realistic than the real one.
 I like it 
  August 24, 2008
cool gun the picture of the real one is the bb gun i bought on holiday in Rhodes
 I like it 
  August 11, 2008
Could you send me the instructions?
 I like it 
  July 31, 2008
You are one of the Best LEGO gun builders here.
 I like it 
  April 1, 2008
This is probably the simplest, most effective lego firing mechanism I've seen. The pics were helpful, Im gonna see if I can use it at some point. One thing i dont know is how do the cartridges keep moving up on the megazine?
 I like it 
  March 28, 2008
this is awesome the one thing i dont get is how the blocker moves up when the spring is compressed
 I like it 
  January 31, 2008
Impressive! I've seen many different types of firing mechanisms, but this one is simple, working and semi-atomatic! A fantastic job!
 I like it 
  January 12, 2008
..............................................................................................I'll never be able to make guns as good as yours, but still, check my guns out, please!!!!!!!???!!!!!!!!!
 I like it 
  January 12, 2008
Good job! Can you somehow give me an idea on what kind of pen you got the spring from? Man can you imagine if this was put on LDD? Check out my guns! I'm almost done with a new shotgun!!
 I like it 
  January 1, 2008
You have talent on making lego guns. looks very good. Keep up the good work!
 I like it 
  December 19, 2007
hey truly amazing btw I wont hassle you for instructions because ive already built one from the pics and i gave all credit to you
 I like it 
  September 8, 2007
exelent! please make a tutorial to build it ;)
 I like it 
  September 3, 2007
This is a beauty! Nice work.
 I like it 
  September 3, 2007
Very nice MP7, I can actually figure out how it works. It is also very accurate, but can you write the type of spring you use?
 
By Thomas Cooper
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LEGO models my own creation MOCpages toys shop Heckler&Koch MP7 PDW (Working)Technic


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