[size=13.3333px]A little ledge (arrow A) on the single action lever (part 32.1) props up the single action sear (part 32.3) by engaging at point (B).
[size=13.3333px]The single action sear (point C) is engaging and holding the striker in the 'cocked' position at (point D).
[size=13.3333px]When numnutz whapps the rear the PPQ with the rubber mallet, the jaring is strong enough to make the single action lever pivot rearwards. When the single action lever moves rearwards far enough, it releases the single action sear, which releases the striker which zooms forward and hits the firing pin block.
[size=13.3333px]Now you have a PPQ with one in the chamber and a striker that is not cocked. OH NO....what to do. Simply move the slide rearward about 3/8" and back forward. You did not eject the round in the chamber, but you DID recock the striker.