I managed to get lots of parts cast for my gun bit I\'m not sure if I\'m happy about that or not. Sone of them have come out well, but some have a few holes in them. I had to leave material on all surfaces for machining tolerances. I cast them because I had the technology available at the time and I was going to lose access to my workshop at work when I changed jobs.
Casting the bolts was probably the best advantage. I\'d advise machining from scratch for most parts. You\'ll get a much better finish.
