thndrchiken
Member
Hello all, just got done installing the d/caek kit on my new M&P 40C, wanted to share my observations....
First stock gun, trigger pull right at 6 1/2 lbs, with really gritty take up and break. Not the greatest but compared to some factory triggers not the worst.
So first up is the USB and took the opportunity to swap out the stock contrast with the new Truglo TFO's, fortunately I was able to use my Sig sight pusher for the front, the rear didn't fit so had to drift it out. Total time about was about 15 minutes to install the USB and the sights. Result, all grit gone and trigger pull reduced to 5 1/4 lbs. Nice.
Next I decided to see what kind of a difference the different springs made for the Sear, keeping the stock spring with the Apex sear cleaned it up just a little bit more and reduced pull weight to 3 1/2 lbs, using the Apex spring increased to 3 3/4 lbs. Way too light for a carry gun even with the thumb safety that mine has, figured I'd leave that in to see what the trigger return spring will give me. Total time with experimenting with each of the springs and the in and out was about 30 minutes.
Trigger sping install was the hardest part of the whole installation just getting everything lined up. The slide stop was giving me fits with the slave pin on the install getting everything lined up, an exercise in frustration considering that I was doing this while still trying to work and answer the phones when customer's called in. Finally decided to leave the slave pin out and get the trigger, trigger bar and slide stop positioned then inserted the slave pin with the whole thing in the frame and then the block in after that and drove the slave pin out with the trigger bar pin. So with all said and done the trigger didn't have that mushy feeling anymore and pull weight at 5 3/4 lbs. Total time including the frustration about 40 minutes.
Decided to try the stock sear spring and took the pull weight to 5 1/4 lbs, with a nice click on the reset that is about half of what the stock was and now sits probably just under 1/4" with a noticeably audible click that is readily felt from the trigger finger. I think that is the configuration it will stay in.
So all said and done I'm pretty happy with this gun now, just need to zero the sights and get the break in completed. I'd say the biggest bang for the buck came from the USB plunger and spring, but I had the whole kit so it went in. Definitely a marked improvement over stock. Sorry if I got a little long winded but wanted to be as complete as possible for anyone who is on the fence about the kit. If you have basic mechanical ability, a set of punches and some jewelers pliers, a hammer, block of wood and an internet connection to Youtube it is very doable for someone who wouldn't normally work on their own guns.
First stock gun, trigger pull right at 6 1/2 lbs, with really gritty take up and break. Not the greatest but compared to some factory triggers not the worst.
So first up is the USB and took the opportunity to swap out the stock contrast with the new Truglo TFO's, fortunately I was able to use my Sig sight pusher for the front, the rear didn't fit so had to drift it out. Total time about was about 15 minutes to install the USB and the sights. Result, all grit gone and trigger pull reduced to 5 1/4 lbs. Nice.
Next I decided to see what kind of a difference the different springs made for the Sear, keeping the stock spring with the Apex sear cleaned it up just a little bit more and reduced pull weight to 3 1/2 lbs, using the Apex spring increased to 3 3/4 lbs. Way too light for a carry gun even with the thumb safety that mine has, figured I'd leave that in to see what the trigger return spring will give me. Total time with experimenting with each of the springs and the in and out was about 30 minutes.
Trigger sping install was the hardest part of the whole installation just getting everything lined up. The slide stop was giving me fits with the slave pin on the install getting everything lined up, an exercise in frustration considering that I was doing this while still trying to work and answer the phones when customer's called in. Finally decided to leave the slave pin out and get the trigger, trigger bar and slide stop positioned then inserted the slave pin with the whole thing in the frame and then the block in after that and drove the slave pin out with the trigger bar pin. So with all said and done the trigger didn't have that mushy feeling anymore and pull weight at 5 3/4 lbs. Total time including the frustration about 40 minutes.
Decided to try the stock sear spring and took the pull weight to 5 1/4 lbs, with a nice click on the reset that is about half of what the stock was and now sits probably just under 1/4" with a noticeably audible click that is readily felt from the trigger finger. I think that is the configuration it will stay in.
So all said and done I'm pretty happy with this gun now, just need to zero the sights and get the break in completed. I'd say the biggest bang for the buck came from the USB plunger and spring, but I had the whole kit so it went in. Definitely a marked improvement over stock. Sorry if I got a little long winded but wanted to be as complete as possible for anyone who is on the fence about the kit. If you have basic mechanical ability, a set of punches and some jewelers pliers, a hammer, block of wood and an internet connection to Youtube it is very doable for someone who wouldn't normally work on their own guns.
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