Just recieved my M&P 45 back with the Apex FSS trigger installed and it's like having a new gun.I've been a 1911 shooter for 25 years and just could never get used to any of the striker triggers,but the FSS is very very close in feel to a 1911,I now have what i consider to be a modern version of a 1911 with lighter weight,higher capacity and less recoil.By the way , I had Paul Eichenberg (just outside of west chester) do the work and i highly recomend him.He did a great job and managed to get the gun back to me in just over a week.