I found an article at http://www.gunblast.com/Ruger-P345.htm
that mentions the "magazine disconnect".
I found more info regarding this controversial feature at Rugers own site, from a News Release dated Nov 11, 2004. It specifically mentions the 'magazine disconnect".
If you guys are saying yours functions and fires with the magazine out, then I have to belive you and surmise that Ruger has dropped this feature.

If so, "GOOD!" I'm used to operating under the assumption that all my guns are always loaded and ready to go off.