[HiTech RedNeck]

I doubt that the target equipment is these 3D printers, which do not produce very strong “printouts.” Driving CAD/CAM equipment seems to be the goal.

[Deek]

DD is selling these: https://ghostgunner.net/

You can buy these: https://ghostgunner.net/collections/featured-products/products/ar-15-lower-receiver-1 from DD (and others). The Ghost Gunner allows you to machine the 80% into 100%. The catch is that you need to have a CNC file to driver the Ghost Gunner.

[TalonDJ]

“I doubt that the target equipment is these 3D printers, which do not produce very strong “printouts.” Driving CAD/CAM equipment seems to be the goal.”

The morons pushing this stuff don’t know anything except what ‘looks scary’. They could not spell CAD/CAM. The CAD/CAM capability for this has been widely available as long as you or I have been alive.

[PapaBear3625]

I doubt that the target equipment is these 3D printers, which do not produce very strong “printouts.” Driving CAD/CAM equipment seems to be the goal.

You can buy polymer AR lowers, so I'm thinking an AR lower from a 3D printer might work OK. If it's not robust, you can make more...

[Garth Tater]

I doubt that the target equipment is these 3D printers, which do not produce very strong “printouts.” Driving CAD/CAM equipment seems to be the goal.

Print a wax lower and pour yourself a brass copy using the lost-wax method. Could probably use aluminum as the casting material but I've always wanted a nice, heavy, brass AR-15.

Machined or cast. Metal or plastic. They can't stop this stuff, it's already out there. I don't know why they even waste their time trying to put it back in the box.