3D Printed AR15 Much Improved, More Reliable

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Major improvements have been made in 3D printed AR15 rifles. The part of the rifle that is defined as a gun by federal law is the only part printed. The rest of the parts are commonly available on the free market.

People have made guns at home since guns were invented in the 1500’s or before. However, the ability to print out your own AR15 lower receiver at home, without having to use steel files, a grinder, or other home workshop tools, has caught the attention of the public in this digital age.

Defense Distributed is the organization that aims to make the promise of the Second Amendment a practical reality for everyman at the touch of a button. No longer will criminals in and out of government be able to be reasonably certain that their victims are unarmed.

The first AR15 lower printed by Defense Distributed was matched to a barrel chambered for the 5.7x28 cartridge, a pistol/rifle round less powerful than the more common .223. It failed after six rounds.

All of their design work and testing is now being done for and with the .223 cartridge. Several different printers and technologies have been tested. Stress analysis with sophisticated engineering design tools has been used to reduce the number of prototypes required. The lowers will now work reliably for 40-60 shots before failing. The highest round count so far has been over 80.

The failures occur at the rear take down pins, through to the hand grip.

Defense Distributed believes that their latest improvement will be reliable for 100 rounds. They expect to release the build files to the public in the next few weeks.

They will dedicate it to Joe Biden and company.

Dean Weingarten

Pictures and working links at the site:

http://gunwatch.blogspot.com/2013/01/major-improvements-have-been-made-in-3d.html
 
wow, nice work!

have you looked into modifying the external dimensions of the lower to "beef" them up to better deal with the stresses?
 
Progress is being made rapidly

They are working it. They have considerable talent and some money supporting them now. It is happening. They sound very confident.

I believed that this interim report would be of interest, as the old media is ignoring them.
 
Magazines are Here, More are Coming

They are working to have printed standard capacity magazines. They say that the magazines are very easy to do. I posted a story on the files available for an AR 15 magazine, and Cody Wilson of Defense Distributed says that people have successfully printed AK magazines without a problem.

More later when I have enough for a story.
 
I have seen the 5 round printed AR mag, won't be too difficult to make larger ones.

With a 1.5 million back order of AR mags a person can get their money back pretty quick after buying a printer and making several dozen a day.

Doesn't matter to what degree any mag law takes effect, anyone can now make their own, the tech cat is out of the bag.
 
The oppressors do not care. They want them to be Illegal

The important thing for statists is that they are illegal. In a generation or two, grandpa's old AR15 and magazines will be turned in for an extra food ration.

What they aim to do is to eliminate the gun culture in America, and teach all to be serfs. They are well on their way. It is cultural Genocide.
 
Thats why grampa has to teach his grandkids to value that ar15. The key use that I see for these 3d printed weapon parts it the arguments they provide for the futility of a AWB. I believe the majority of politicians only veiw the topic of guns as an issue to get votes. Therefore the mindset of the people is so important, and having government controlled education is much more effective than gun control at suppresing the sheeple.
 
Nice post, Dean.

Look at the Dept. Of Justice graph that tracks violent crime during the twentieth century, and there are two obvious high points:

1) Everything after the late 1960's

2) Prohibition (after organized crime got their act together)

And the black market for banned guns will be at least as great as the black market for alcohol. Welcome back, Al Capone.
 
You really need to start on a 30rd mag that is easily printable. It would show the futility of a capacity ban.

This.

Doesn't matter to what degree any mag law takes effect, anyone can now make their own, the tech cat is out of the bag.

And this.

The analogy to bath tub gin back under Prohibition seems apt.
 
I think I can work the reliability and lengthen the life of these after printing with a simple bracket. If that failure is what I believe it to be.
 
in the mid 70's i worked at a tab house ( an appendage of Gallop Poll in NYC) and back than computers were huge and our color copier was a $40,000 machine. long story short--seems the go-for boys at the office were printing money using the copier. mostly 1's and 5's to buy park joints, gamble and pay for lunch. at least thats what they told the Treasury Men who tracked the money back to us about 9 months after we got the machine. so the T-Men 'adjusted' our machine and put a special lock on it ( free, go figure...) so that the green of money could not be produced. this copier was so good it even did the security color threads in the money.

if they can adjust one type of machine---id wager they can do it to others. so it may be that 3-d printers are going to have special default programs and/or be registered.
 
if they can adjust one type of machine---id wager they can do it to others. so it may be that 3-d printers are going to have special default programs and/or be registered.

they really cant register 3d printers......as it is currently possible to print a 3d printer with another 3d printer.....

also, money is pretty easy to "lock out" as it all looks the same.......what does a gun look like?
 
If they put software blocks on, it would only be a matter of time before there was a "jailbreak".


well the thing is, 90% of the software out there is open source....its not coming from a company, you really cant mandate a software block on opensource software.

even if they could, how would the software work?.....like i said, what does a gun look like?......

there is no way to differentiate a 'gun' from a 'bracket'....and assuming they somehow could, you simply change the model cosmetically enought to get around the software.
 
The printers needed cost $15,000 -$25,000.

That just gives you a stripped lower and in line behind everyone else trying to buy parts for their stripped lowers.

Barrels and springs cannot be made this way.
 
The printers needed cost $15,000 -$25,000.

That just gives you a stripped lower and in line behind everyone else trying to buy parts for their stripped lowers.

not true.

there are many printers available for <$1,000.

if you want to build it yourself, they can be had for ~$400.
 
I wonder, with this technology, if we'll see custom options as being more readily available? If they can put in different specifications and create products, then they can probably have more variants of the same model (i.e. right-hand, left-hand, etc).

There would be no sure way to structure the software so it couldn't be used to reproduce a firearm. So essentially, this makes the idea of even if congress could wave a magic wand to make every gun that isn't in a US military or police armory disappear mean that guns will still exist. Criminals can print them. If criminals can print them, I want to be able to have them, too.
 
The printers needed cost $15,000 -$25,000.

That just gives you a stripped lower and in line behind everyone else trying to buy parts for their stripped lowers.

Barrels and springs cannot be made this way.
They are coming. I predict that barrels and springs for a printable firearms shooting standard ammunition will be available on printers costing less than $10,000 current value dollars in 10 years. They might need a little easily availabe heat treating.

They are coming.

I believe it would take little for a cnc machine to turn out hundreds of pistol barrels a day now. Those machines are available for about $20,000 today.
 
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