Caution-Capable of firing with magazine removed

That's engraved on the slide of the new Smith & Wesson automatic pistol that graces the cover of American Rifleman.  No kidding.  We knew that like forever.  You always open the chamber and make sure it is empty.  I learned that when I was 12 years old at summer camp.  And that was a long time ago.  Back when summer camps taught riflery.
    The safety Nazi's at work.