I a 45 and a shield that I put the apex dcaek in. The 45 trigger was ok before but the apex with the glock style trigger made it perfect. The shield had an excellent trigger with a strong reset. The apex made it "better", but honestly the two were pretty close so I didn't gain much by changing things out. Part of the mushiness is their idea of the trigger safety by hinging the entire trigger . The apex trigger is way better and removes the mush. The polymer trigger is just as good as the aluminum so save some money if you switch.