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JDay
03-02-2013, 12:04 PM
A 3D printed AR-15 lower that holds up under fire.

“The actual count was 660+ on day 1 with the SLA lower. The test ended when we ran out of ammunition, but this lower could easily withstand 1,000 rounds.”

http://arstechnica.com/tech-policy/2013/03/download-this-gun-3d-printed-semi-automatic-fires-over-600-rounds/

tAW72Y_XPF4

killshot44
03-02-2013, 2:33 PM
Too bad you can't print barrels......

Because you just torched the rifling right outta the first few inches of that one.

As for testing a Lower, firing it puts no stress on it.
How about seeing how many times you can put in and take out the pistol grip screw, the take-down pins and the buffer assembly? That'd be more relevant to testing its strength.

JDay
03-02-2013, 2:43 PM
The first lower they test fired lasted 6 rounds before the section that holds the buffer tube snapped off. Test firing does stress the lower.

http://www.nbcnews.com/technology/futureoftech/3-d-printed-gun-fires-6-shots-then-falls-apart-1C7404226

http://msnbcmedia.msn.com/j/streams/2012/December/121204/1C5038700-gun.streams_desktop_medium.jpg

ott1
03-02-2013, 3:26 PM
Looks like they beefed up the areas around the buffer tube and the upper part of the lower receiver.

JDay
03-02-2013, 3:33 PM
Looks like they beefed up the areas around the buffer tube and the upper part of the lower receiver.

They did some stuff with the takedown pins too.

cjskalka
03-02-2013, 4:31 PM
Hmmm, I wouldn't consider SLA the same as 3D printing.

highcenter
03-02-2013, 4:45 PM
edit

JDay
03-02-2013, 5:13 PM
Having a 3D printed lower, nice. Having a 3D printer of your own, much nicer...

You can get one for the pre-panic price of a DD rifle, ~$1200.

Guard66
03-03-2013, 2:51 AM
Wait, you guys actually used that 3D printing technology that to make this? That's wild! I thought the original designers were having some big dispute with people aboutusing their product to make weapons. Just imagine in the future the weapons anyone will be able to print. :)

GoingPro
03-03-2013, 3:32 AM
looks like if there is a ban.... doesnt look like we will have much of a problem with getting our things we need.

GoingPro
03-03-2013, 3:33 AM
Things will be expensive though. :)