I think if you install the Apex trigger return spring that should add about 1lb to the pull weight.

 

One of the other guys had the Apex striker block (keeping the longer factory spring in place), hard sear and trigger spring installed in his M&P 45. I ran an average of the trigger pull afterward (after it had been fired for a bit) and achieved an averaged reading of just under 5 1/2lbs. A few mid 4lb pulls balanced against some 6+ lb pulls observed on the digital gauge. (I didn't break out the trigger weights.) Pretty much what my stock M&P 45 exhibited after having been fired for over 2,500 rounds.



Now, manufacturing and normal tolerance variations can change the trigger pull experience for any particular gun. The accepted M&P trigger pull tolerance is +/- 2lbs of the listed stock weights according to what we were told in the armorer class, with the 9/.40/.357 guns having a 6.5lb stock weight and the .45's running about 7lbs. My M&P 45 originally exhibited some averaged trigger weights of between 8 1/2 - 9+ lbs when new (certainly on the heavy end of the expected range), but smoothed out & lightened up after a lot of shooting. While the original trigger was on the heavy end, it certainly didn't prevent the gun from having a predictable break or being very accurate. Just heavy.



I've known a small number of guys who have been pleased with the results of using some of the Apex parts in their M&P's. I just haven't seen the need since mine broken in very well and is giving me smooth trigger pull weights averaging in the 5 1/2 - 6lbs range and excellent accuracy.



FWIW, I tend to like my 1911's used for defensive carry to have trigger pull weights running around 5 - 5 1/2+lbs, too. Good parts when it comes to manufacturing and fitting can make a 5 - 6lb trigger feel "light enough" for good, consistent work.



You'd really have to call Apex and see what they recommended for increasing the trigger pull with their parts.

 

You'd really have to call Apex and see what they recommended for increasing the trigger pull with their parts.

Fastbolt - thanks for the reply. I don't have the APEX hard sear in my M&P9FS - I have the Performance Center sear that S&W put in when they did the M&P Pistol Action Package work. I'm wondering whether installing the APEX Duty/Carry Spring Kit will increase the trigger pull weight using the PC sear. I'm quite happy with the feel of the trigger as it is, but would prefer it to be just a bit heavier pull.



I am about to purchase an M&P45c, and will put the APEX parts into this as soon as I get it.

 

With the DCAEX kit, how many of you are installing the heavier sear spring? Using the standard factory sear spring, the trigger pull should drop by around .75 pounds (4.0-4.50 lbs.) according to Scott at Apex.

 

With the DCAEX kit, how many of you are installing the heavier sear spring? Using the standard factory sear spring, the trigger pull should drop by around .75 pounds (4.0-4.50 lbs.) according to Scott at Apex.

I have the heavier sear spring and Apex USB and Apex sear, trigger pull around 3lbs 5oz-3lbs 10oz with Lyman gage, little too lite for CCW. Talk to Scott from Apex, He tell me send my sear block housing for larger plunger and larger spring install, will increase the pull weight around 1/2 lbs.

 

I have the heavier sear spring and Apex USB and Apex sear, trigger pull around 3lbs 5oz-3lbs 10oz with Lyman gage, little too lite for CCW. Talk to Scott from Apex, He tell me send my sear block housing for larger plunger and larger spring install, will increase the pull weight around 1/2 lbs.

I may do the same. At least it's just the sear block you have to send him not the whole gun. Thanks.