Not sure if this is the correct spot for my question but it seemed like it was a reasonable one. I've been saving up for a nice Hurco 3-axis cnc mill, and I want to build my own AR-15. All across the world wide web everbody and their mother is interested in AR lowers, I'm interested in a complete build minus the barrel. I have accurate blueprints, firearm specific manuals, machining manuals, gunsmithing manuals,the ability to learn incredibly fast (kinesthetically), and a hunch, but I'd like a more experienced input. Can I build the entire AR-15 (minus the barrel) using a cnc mill? or would i have to invest in a 3D printer as well?