I have a non-Mass. M&P 9 FS (spent cartridge date 2/14/14) which from my understanding has the "updated" factory trigger. I've read a lot of bad reviews on the M&P trigger, but after about 500 rounds, I'm mostly content with mine. There is a fairly short, mildly gritty uptake and an audible/tactile reset. The only aspect of the trigger I don't like is the pull weight is a little too heavy. Will polishing the internals lower the pull weight at all? If so, which specific part(s), if polished, will accomplish this?
Also, here's a pic of the sear. What does the R indicate?
Also, here's a pic of the sear. What does the R indicate?