Instructables
This will show you how to make a Portal gun model from the video game Portal, using lego. (no it doesn't work)

It features interchangeable colors, blue and orange. (step 6)


The steps are in the photos.  I have highlighted the pieces you need to add with each step.

Includes optional stand. (step 5)



See also: http://www.instructables.com/id/Lego-Atlas-And-P-Body/
 
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Step 1: The Pieces.

Picture of The Pieces.
Picture 648.jpg
Listed in these two pictures are the pieces you'll need to build this.

Step 2: The Barrel.

Picture of The Barrel.
First is the barrel and the prongs.

Step 3: The Body.

Now the main body of the gun.

Step 6: Interchanging Portal Colors.

 As you know when you shoot a portal the glowing parts change color, here you can change the blue and orange colors.
NathanH13 months ago

sweet! this is a lot like the real one!

Add potated glados! :D

nvmbed2 years ago
What is the correct name for this "open cockpit" piece? Can't find this anywhere.
Just found it after a while of looking. According to BrickLink, it's called: Windscreen 4 x 4 Roll Cage
monsterlego (author)  nvmbed2 years ago
I has no clue :P I'll try to find it
pretty cool
awesome!!!!!
hrodriguez72 years ago
it would be really awesome if you put an LED in the front or a laser in the front!
3ddementor2 years ago
Nice Job
I love the accuracy of the model, it looks as if there was an actual kit designed for this build!
Geeknxt2 years ago
Could anyone post a .ldd file for this?
I don't have all the parts and I really want to make this.

Geeknxt
(removed by author or community request)
monsterlego (author)  DELETED_One.2 years ago
Thanks! (I'm hoping to get a minifigure out soon.)
Jsquared242 years ago
Awesome! You are a really good lego builder! 11/10
And nice touch with the interchangeable colours :)
monsterlego (author)  Jsquared242 years ago
Thanks!