"Everybody" (that means maybe not you) trashes investment cast 1911s. I have one. It looks like an A1, the one I wanted, and it goes bang. But no one trashes Rugers. I looked awhile back and lots of cool stuff is made with investment casting. A while ago I got a wild hair and just had to know all about jet turbine blades. Google? Turbine blades are truly made out of unobtainium, wild alloys. They melt it in trick furnaces, and pour it into investment casting molds.And the we all ride on them at 500 mph. "No one" bitches about that.