cliffs:

incompetent gunsmith fitted a barrel bushing by removing material from the slide

inexperienced owner (me) was puzzled by multiple bushings becoming loosey goosey

master gunsmith machines a threaded sleeve over the Bar-Sto match barrel, then machines an Officer-like spring plug

problem solved

not so pretty, but it's a shooter, so sue me

9mm Commander with bull barrel

how does she shoot is the question

tight as a tick

hitting 6" metal silhouettes at 50yds