i installed the apex hard sear and the ultimate striker block this morning on my m&p 9c. i have a mass compliant and i used a fishscale to measure the pressure pre and post work. i went from approx 9.5 lbs to just under 6 lbs. it shoots like a totally different gun. i liked it before but it is really smooth now. i need to get used to the reset as it is quite a bit less now. i did not do the trigger spring yet and i think i might hold off on that for now. the biggest pain was getting the rear sight off. i still need to zero it in but only had time to blast off 50 rounds this morning.