[remarkEon]

While this is technically possible, it is not that easy. In other words, someone who is technical and experienced enough to manually create a lower like that is very likely to have extensive experience with firearms anyway (and likely owns many).

[AnthonyMouse]

> While this is technically possible, it is not that easy.

Isn't the same thing true for 3D printers? The first time someone tries to print something they frequently end up with spaghetti and less technically competent people wouldn't even be able to get the thing to attempt printing anything.

[stavros]

That used to be true, but no, nowadays they print perfectly out of the box.

[giancarlostoro]

You'd be surprised how motivated someone in a gang could get watching a ton of videos on youtube just to get access to a gun police cannot "trace" in a meaningful way.

[remarkEon]

I would not be surprised at how motivated a gang member is to acquire a firearm, no. So, I guess point taken, however a) I was responding to a claim that's slightly different from 3D printing lower receivers, and b) I thought YouTube banned/got rid of content that actually taught you how to do this? I have not looked in a long time. In any case, milling out a block of material on your own to function as a lower is going to take a lot of time and skill, so my original point still stands.

Separately, I am always a little confused by the idea that you cannot "trace" these firearms. Maybe people do not widely understand what's going on here, but the serial number being traced is on this lower receiver, which can be swapped out (in most but not all cases). If a firearm with a 3D printed lower is used in a crime, I have to assume - though I am not an expert - that you could still connect spent casings to that weapon in the same manner. In other words, it does not matter that the lower doesn't have a factory-installed serial number plate or a stamped serial number. My guess is that this confusion is being injected intentionally in the debate by the people who support/push these badly constructed laws.

[AnthonyMouse]

> Separately, I am always a little confused by the idea that you cannot "trace" these firearms.

It's presumably a misunderstanding of how investigations work. They're paperwork people so the assumption is that the serial number is of vital importance because it's what's on the paperwork, and if something could exist with no serial number then the entire system is in danger.

Meanwhile the serial number is overall not even that helpful. If you catch the suspect with the weapon in their possession then it doesn't matter that much what the serial number is, what matters is if the weapon they had matches the forensics. By contrast, if you don't recover the weapon then you don't have the serial number anyway.

The only case where a serial number would really do anything is if you recover the weapon after the perpetrator already tried to dispose of it and want to try to use the serial number to identify the original owner. But in that case the perpetrator can leave you without a serial number regardless by just filing it off. It doesn't really buy them anything for it to have never had one to begin with.

[draygonia]

Serial numbers are security theater on the same level as TSA checkpoints at the airport.

[herewulf]

That is definitely not how gang members are occupying their thoughts and activities. Real firearms are super easy to get in the US, legally or illegally, and it takes much more than "untraceable" firearms to get away with shootings.