The front serrations (FS) provide an additional tactile surface choice when manipulating the slide giving the operator positive traction even with wet or sweaty hands. This new design offers the advantage for professional users to do a fast press check before and after firing. The user may grip the slide by the front serrations with the weak hand and move it to the rear until a clear view of the chamber is possible in order to ensure that a round is properly chambered.
When done correctly the hand gets nowhere near the muzzle of the pistol.