>>520789007
no it's really not.
at least not for the type of person with the skill set need to accomplish the end goal.
a 3d printer and a mill are about the same price and i don't know anyone ever that's bought bar stock, we all just kinda have scrap that's been sitting around since WW2 and aluminum fucking grows on trees at this point.

Its not some crazy machine shop million dollar equipment, people have been milling AR-15 lowers with a simple hand drills for the last 20 years because it really is that simple