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3D Printer Lower Receivers, your thoughts?
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3D Printer Lower Receivers, your thoughts? - May 10, 2013, 09:23 AM

Okay so after days and days of listening to this debate on 3D printed "guns" and watching the following doc, what are your thoughts on this? I think the guy is a douche but his ideas are interesting and worth noting for better or worse, what you think?

3D Printed Guns (Documentary) - YouTube



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May 10, 2013, 10:58 AM

I think Cody enjoys being the sinister, rebel, freedom fighter. It's unfortunate that the discussion is centered on this highly intelligent, well-spoken fellow who's only objective seems to be disruptive.

One thing for certain, and one thing he's made clear, is that the current laws are already dinosaurs compared to the technology. In the end guns are just pieces of metal, or pieces of plastic, and trying to legislate on intent to make a specific, demonized, tool inaccessible is foolish. Someone who wants to hurt a lot of people will simply move away from guns when they become too complex to procure. Pipe bombs are easy to make.

Fact is we get these trends, ricin, pipe bombs, school shootings... they all are based on these copycats of intent for reasons that are or are not very clear. Man wishes to do harm? The rap music and violent games are degrading our societal moral fabric? I'm not sure. Should we register pressure cookers now? Black powder? Maybe we should just install 3 million more cameras and hire people to watch everyone.


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May 10, 2013, 11:00 AM

I will never give up my pressure cooker! NEVER!!!!


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May 10, 2013, 11:03 AM

Quote:
Originally Posted by airjor13 View Post
I will never give up my pressure cooker! NEVER!!!!
From my rice and veggie filled hands!!!


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May 10, 2013, 02:49 PM

Lock and Load - The Official Firearms Thread



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May 13, 2013, 09:40 AM

I wouldn't use a plastic lower shooting anything bigger than .22 rimfire.
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May 13, 2013, 09:57 AM

Quote:
Originally Posted by jrswanson1 View Post
I wouldn't use a plastic lower shooting anything bigger than .22 rimfire.
I suspect that these will come up toward the quality of polymer lowers soon. The big issue is reinforcing the buffer tube joint. That said a plastic/polymer lower isn't ever my first choice for a SHTF weapon, but for sending plenty of .223 downrange it's probably going to work just fine.

This is a discussion on the fact that an AR15 only has one part listed as the actual "gun" and that's the lower, and you can print one out in your basement that will shoot 600+ rds to failure... and then you can just print another one, and swap over the LPK.

Since the lower isn't a stressed component (save the buffer tube joint) there's no significant danger to the shooter if it snaps off. Wouldn't be surprised to see some kind of external reinforcement like a grip to buffer tube piece. I was actually thinking it'd be easy to cad something that slides over the buffer tube as a custom stock and connects to a custom grip to reinforce the back of the lower.


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May 13, 2013, 10:14 AM

Quote:
Originally Posted by jrswanson1 View Post
I wouldn't use a plastic lower shooting anything bigger than .22 rimfire.
So you won't shoot a glock? Or an FN SCAR? There is absolutely nothing wrong with polymer lowers.
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May 13, 2013, 11:04 AM

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So you won't shoot a glock? Or an FN SCAR? There is absolutely nothing wrong with polymer lowers.
This


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May 13, 2013, 01:40 PM

Quote:
Originally Posted by Stuckonstupid View Post
So you won't shoot a glock? Or an FN SCAR? There is absolutely nothing wrong with polymer lowers.
No there isn't, but the type of polymer used in rapid prototyping machines is a different formulation of plastic.



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May 14, 2013, 01:19 AM

Quote:
Originally Posted by Stuckonstupid View Post
So you won't shoot a glock? Or an FN SCAR? There is absolutely nothing wrong with polymer lowers.
Completely different. The polymer lower in the glock isn't taking the force of the recoil from the buffer.



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May 14, 2013, 09:25 AM

I don't get the outrage.

What's the difference between this and someone finishing an 80% lower in their garage?

This is nothing more than the media trying to make it out to be something more than it really is, as usual.
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May 14, 2013, 09:50 AM

I'm not sure that plum crazy is the vendor to use when describing the reliability of poly lowers.

There are other vendors that have been fairly extensively torture tested.

Additionally, i'd wager a number of failures were due to idiocy


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May 22, 2013, 07:04 AM

Quote:
Originally Posted by B View Post
I suspect that these will come up toward the quality of polymer lowers soon. The big issue is reinforcing the buffer tube joint. That said a plastic/polymer lower isn't ever my first choice for a SHTF weapon, but for sending plenty of .223 downrange it's probably going to work just fine.

This is a discussion on the fact that an AR15 only has one part listed as the actual "gun" and that's the lower, and you can print one out in your basement that will shoot 600+ rds to failure... and then you can just print another one, and swap over the LPK.

Since the lower isn't a stressed component (save the buffer tube joint) there's no significant danger to the shooter if it snaps off. Wouldn't be surprised to see some kind of external reinforcement like a grip to buffer tube piece. I was actually thinking it'd be easy to cad something that slides over the buffer tube as a custom stock and connects to a custom grip to reinforce the back of the lower.
And a couple weeks later.... a P90 style lower/buffer tube print for the AR15.



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