Perhaps you could cite your source on this? The Caracal is held together by roll pins (see my disassembly thread) - a design that is not shared in common with the Steyr pistols.
You would also have read that the newest import Steyr pistols have a new "roll pin" trigger, which describes a slight modification to the trigger design. On the newest M-A1 and S-A1 series pistols, Steyr added a bearing in the slide to make the trigger more consistent; this bearing is held in place by a roll pin through the slide. These new "roll pin" trigger Steyr pistols are generally regarded as more desirable, as they come with a "better" trigger.