Solid Concepts 3D Printed 1911. Technology is LASER sintered metal. Initial work done in 2013; LASER sintering has only gotten better since. No reason one could not build an AR this way.
4 posted on 01/04/2019 8:50:08 PM PST by NorthMountain
(... the right of the peopIe to keep and bear arms shall not be infringed)