Hating the triangular serrated trigger on my G43, I decided to try an after market trigger shoe. I've tried two so far and they both failed safety tests. The first was a Kineti-tech trigger that I bought with the complete trigger group. It seemed to work fine and solved the trigger shape problem, but when I tried to demonstrate the 'Safe Action' trigger to my son-in-law, the tab on the back of the trigger failed to contact the pistol frame, allowing the the trigger to be fully pulled and release the striker. Out with the Kineti-tech and in with a Lone Wolf Distributors trigger shoe. Just the shoe with an OEM trigger bar, not the full Ultimate Adjustable Trigger. The 'Safe Action' bar tab reached the pistol frame and stopped rearward movement of the trigger. Perfect, or so I thought. The pistol then failed the drop test (about 3', onto a carpet and wood floor), releasing the striker and de-activating the striker block plunger. In this case the 'Safe Action' bar-to-frame distance was too great, allowing the rearward travel of the trigger (presumably due to the drop shock) to push the safety plunger into the slide. The shock would also release the striker from the cruciform (sear). Two up and two down. The pistol is back to the OEM components and works 100%. Guess my finger is just going to have to man-up and get tough.