turomar over at the Ambulatory Armament Depot has found a way to spend his time that I'm sure will get him a call from Homeland Security. He printed an AR-15 at home.
Using a Stratasys 3D printer circa 1990, turomar has printed a complete ar-15 rifle that looks REALLY cool and very detailed. He has the intent to fire it, but as yet no mention if that was done or successful.
"After my AR-15 failed structurally in the buffer tube area, I decided to alter the model and print the lower receiver in two parts. This allowed me to tweak the detail settings on the buffer tube threads, without worrying about a long, slow print causing warp with such a large object."