I recently purchased a Springfield Emissary in 9mm but they are made in 45 also. Probably have 1,000 rounds thru it.
I changed the mag release to a Dawson, safety to an Atlas shielded, trigger to an X-line vario, and the front sight to a fiber optic Kensight. None of these changes were needed but what I wanted. Gun is now setup to my specs and is really nice in my opinion.