• The TP9SA is a single-action-only (SA) variant of the TP9 which also includes a number of operational changes and improvements over the original design. It still retains the slide-top decock button, but rather than pulling the trigger to re-cock the pistol, the slide must be drawn back just a little to reset the striker. Other changes and improvements include a consistent (SA) trigger pull, new grip and magazine design, a mil-spec accessory rail, a squared trigger guard, metal sights over the original TP9’s plastic sights and a loaded chamber indicator.