There was even an expanation of what the conversion took in terms of gunsmithing in an old NRA publication, either the American Rifleman or one of their Guides to Gunsmithing. There was a similar article on converting the MKI to .22 Short for Olympic rapid fire training. (Hint: the .22 short conversion is a little simpler.....). Betcha .32ACP would be simpler than .32 S&W Long....but WHY? And I LIKE .32s.....