tremendous work Brian. This is really the way of the future for small parts. As the technology evolves I could see more and more parts of a rifle made this way.
Have you ever ordered a part in metal? I wanted to do some harmonics testing with my Steyr with a simple tube that I could slide up and down the end of the barrel. Just a big tube - open ends, no air stripping. But a machinist wants at least $50 for this. Seems like a 3D printed part would be a piece of cake.