Because when it blows up, it's going to rip your face apart. When it fails, it's going to fail and take your hand/cheek/eyes. And I doubt they'll come with a 3d printed emergency room.

It would be much easier to go to the hardware store, and make a gun. And you obviously haven't the foggiest idea as to how 'cheap' 3d printing really is, nor have you compared how much it is to buy a cheap 22 cal.

I actually started out with that argument. But if you can sinter stainless steel, you can harden it just like you normally would (I think).

I'm not saying it's practical, right now. But the word never is perhaps not a good choice.

Laser sintering, but it cannot produce hardened metal needed.

On the other hand, I suppose sintered steel could be hardened. Hrm..

Still is never going to be cheap due to the cost of the lasers, etc.

You are aware that all of these 3d printers use G-Code, right?

Laser sintering of metal parts is not, in any stretch, going to be cheap for a home printer to do. Additionally, laser sintering cannot produce the hardened metal needed for the upper receiver. Go ahead and try it. You'll blow your face off as the barrel eventually bubbles and bursts.

They've printed some of the parts of a gun.

    They still need barrels, and most importantly, firing mechanisms. The printed parts are currently still holding all of the 'metal bits' that make up the gun.

    Besides, the ATF really wouldn't be able to do much about it, unless they where being sold..

The fact is, Samsung's GS3 and the iPhone 5 are the two top kahuna's as far as installed userbase is concerned. They are still neck in neck in competition. Your argument is, 'At least we have 51 iPhone 5s for every 49 GS3's!'. So basically, what IS your point, anyway?

The point is, Samsung has done NOTHING but gain on the iPhone. It would be ignorant not to acknowledge that fact.

You DO know that it's 51% versus 49%, right?

Their design looks like they really just took an existing model, and sliced it up to be printable. Not really all that impresive, personally.

http://www.geekosystem.com/3d-printing-plane/

That one is from two years ago, and more interesting.

You DO know iMessage is just XMPP, right?

We've spent too much money verifying the software which was NOT testing under OpenJDK.

Software which someones tested and released under a given JDK was generally using it for a reason. I can, for one, specifically say that a project I'm working on will specifically *not* run under the OpenJDK.

That's a Motorolla Photon with a keyboard!