[absolootezer0]

from what i’ve seen, the materials don’t look like they’d be able to handle the pressures created by firing a cartridge. might be a one shot zip-gun at best.

[aimhigh]

There is a company in Sweden doing 3D printing with titanium. I’d consider investing in the firm, but no nothing about the downside of investing in foreign stocks.

[PapaBear3625]

from what i’ve seen, the materials don’t look like they’d be able to handle the pressures created by firing a cartridge. might be a one shot zip-gun at best.

The regulated part being printed, which is what BATFE classifies as the "firearm", is the lower receiver frame. The bolt, barrel, trigger group, etc, can be purchased without paperwork. The plastic frame got tested, and it held up for six shots before breaking. 3D printers that work with stronger materials will be coming.