"In fact, the most troubling thing isn't that these exist. It's how how easy it was to make them."

With this statement it is completely obvious how sheltered you are, and how afraid of guns you are.

People have been making hand-made ammunition since the days of the Revolutionary War when people melted their own lead to…

why is it disturbing that citizens are able to exercise their constitutional rights? WHAT IS GOING ON IN THIS COUNTRY!?!?!?!?!

3D Printers - now making the same crap you could always make, but more expensive and out of weaker material!

BREAKING NEWS, PEOPLE ARE PUTTING FORKS INTO CANNONS!!! THEY CAN EVEN 3D PRINT FORKS, THEY CAN PROBABLY 3D PRINT A CANNON MAYBE KINDA. LETS BE SCARED

How is this different from the bazillions of people who already reload or cast their own slugs from lead? Stop being so inflammatory with your post Gizmodo.

So he filled it with Light Emitting Diodes whats the big deal, these slugs will do much less damage than traditional ones filled with lead.

how is this troubling? it would be easier to make them by hand than it would be to use a 3D printer. this is boring… i'm bored.

"scary", "devastating", "troubling".

I'm really not troubled at all by either.

Its different when power generation is the entire intended purpose of the device. The words motor and engine are basically interchangeable at this point. Its silly to simply take the individual components and call them different names when we are talking about the system as a whole.

"The opposite of an engine would be something that takes mechanical motion and turns it into energy, I suppose-a generator."

Most motorcyclists dont recognize that abortion as a real bike. Bikes should have a turning radius less than a mile.

A turbine is not an engine...and you have two listed there.

Kid, I've been playing videogames since before you were born.

Skynet just called wanting more info on this...

Obligatory...

Oh for heavens sake. This changes absolutely nothing. One, this so called firearm is a piece of junk with no practical value of any kind. Second, anyone with half a brain can make a firearm. Anyone. Third, printed firearms are ridiculous. They are expensive, underpowered, take forever to reload, inaccurate and…

Anyone with half a brain can design a simple gun like this. Anyone. Firearms have been around for 800 years. This isn't rocket science, and suppressing the plans is not going to suppress the manufacture. So get over it. A 3D printed gun is more or less the most useless firearm ever made - barely a step up from…

minutes? lol apparently you have no idea how 3d printers work.