S&W Performance Center sear in M&P Shield 9 mm - MP-Pistol Forum

S&W Performance Center sear in M&P Shield 9 mm

This is a discussion on S&W Performance Center sear in M&P Shield 9 mm within the MP SHIELD Pistols forums, part of the Smith & Wesson MP Forum category; I just measured the trigger pull weight on my otherwise stock M&P Shield 9 mm 1.0 with the S&W Performance Center Sear that I just ...


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Old April 6th, 2017, 09:11 AM   #1
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S&W Performance Center sear in M&P Shield 9 mm

I just measured the trigger pull weight on my otherwise stock M&P Shield 9 mm 1.0 with the S&W Performance Center Sear that I just installed and it measured at 5 lbs plus a hair pull weight as compared to the heavier pull weight but still otherwise decent original standard trigger (gun built Jan. 2015). The PC sear in the standard Shield does have a minor effect on the smoothness of the trigger uptake/pre-travel) as the shape of the PC sear causes the trigger bar loop to engage the PC sear slightly later than with the standard sear so that the striker block has just started to push up before the trigger bar loop starts to engage the sear. This causes a very slight amount of roughness in the immediate pre-travel just before the sear is engaged by the trigger bar. This wasn't noticeable with the standard sear as the timing was such that the striker block was pushed up at exactly the same time that the sear was engaged so that any roughness with the trigger bar and striker block couldn't be felt. For a defensive pistol I have this trigger right where I want it with a crisp break which isn't too heavy or too light, with no over-travel and with a short readily audible and tactile reset. The only thing that I might change beside polishing the nub on the trigger bar that engages the striker block in order to make the trigger uptake/pre-travel smoother is to install the more rounded S&W Performance Center Striker Block or the Apex Ultimate Striker Block.

Last edited by Yankee45; April 6th, 2017 at 01:33 PM.
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Old April 6th, 2017, 09:49 PM   #2
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Did you find the PC sear used?? I'm looking at the Apex sear alone for my non PC shield. From what I understand, it made it rougher than prior to the PC sear?

Maybe some burrs in the block bore?
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Old April 7th, 2017, 05:41 PM   #3
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Originally Posted by greeenteeee View Post
Did you find the PC sear used?? I'm looking at the Apex sear alone for my non PC shield. From what I understand, it made it rougher than prior to the PC sear?

Maybe some burrs in the block bore?
On my PC Shield; the sear was fine, but the striker block made the pull grittier than on the stock Shield I owned at the time.

I kept the PC sear, and added an Apex striker block, which took care of the problem.

If I'd have kept the standard Shield, I'd have replaced both the sear and striker block with Apex parts; as I do on all my carry M&P's.
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Old April 8th, 2017, 06:12 PM   #4
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Originally Posted by greeenteeee View Post
Did you find the PC sear used?? I'm looking at the Apex sear alone for my non PC shield. From what I understand, it made it rougher than prior to the PC sear?

Maybe some burrs in the block bore?
I bought the PC sear from a fellow forum member who had never fired the pistol. No, the PC sear didn't make the trigger any rougher nor would any other sear if it is machined properly. The PC sear changed the timing slightly so that the trigger bar now engages the sear a hair later than the striker block. I wasn't surprised by this and have an Apex striker block on hand if I decide to use it. When the original sear and the striker block were engaging at the same time I couldn't feel any roughness when the trigger was pulled as the gun went bang. I put the PC sear in just to lighten up the trigger a little and to give it a shorter reset. It's a defensive pistol and not a target pistol and I don't want it any lighter so I used the PC sear rather than the Apex sear.

An easy way to tell if your striker block is causing any roughness (it is almost always the greatest culprit) is to push the little yellow sear deactivation lever down then when you pull the trigger all you are feeling is your striker block alone without the sear. When I do that there are no changes when using the new sear.

The latest PC striker block is radiused just like the Apex striker block and is every bit as good if not better. People who change out their sear or put in a whole trigger kit just to smooth out their gritty trigger pull are spending more money than they need to as, unless something else is wrong, its the striker block that causes the gritty feeling. Now, if one wants to change the characteristics of his trigger, then along with their springs and actual triggers, Apex makes a forward set sear for a short trigger pull, their regular sear for a short reset with lighter trigger pull, and their Ultimate striker block to smooth out the trigger pull. One can use their parts to tailor things every which way for a target pistol or otherwise. S&W has some PC parts that can be used depending upon what one is looking for, but it's next to impossible to find them. I do know where some PC sears can he had at times but nowhere can I find a rounded PC striker block.

Last edited by Yankee45; April 10th, 2017 at 04:43 AM.
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Old April 8th, 2017, 06:26 PM   #5
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On my PC Shield; the sear was fine, but the striker block made the pull grittier than on the stock Shield I owned at the time.

I kept the PC sear, and added an Apex striker block, which took care of the problem. .
I'm guessing that your PC Shield didn't have the same PC striker block as the one that is in my buddy's brand new PC Shield 9 mm. His PC striker block is shaped like the APEX striker block which makes for a very smooth trigger.
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Old April 8th, 2017, 07:39 PM   #6
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Originally Posted by Yankee45 View Post
I'm guessing that your PC Shield didn't have the same PC striker block as the one that is in my buddy's brand new PC Shield 9 mm. His PC striker block is shaped like the APEX striker block which makes for a very smooth trigger.
Apparently not; as the Apex striker block alleviated the problem.
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Old April 9th, 2017, 07:20 AM   #7
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I'm guessing that your PC Shield didn't have the same PC striker block as the one that is in my buddy's brand new PC Shield 9 mm. His PC striker block is shaped like the APEX striker block which makes for a very smooth trigger.
The newer PC OEM striker block has a more rounded profile, similar to the APEX, but not the same.
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Old April 9th, 2017, 04:15 PM   #8
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Originally Posted by Yankee45 View Post
An easy way to tell if your striker block is causing any roughness (it is almost always the culprit) is to push the little yellow sear deactivation lever down then when you pull the trigger all you are feeling is your striker block alone without the sear. When I do that there are no changes when using the new sear.
With sear deactivated, it doesn't feel rough to me at all, just the click. But this is the first pistol I've had a complaint with the trigger in any way at all.

Are you saying, you notice NO difference at all with the sear deactivated and when activated?

I do notice a difference once I re-activate the sear, which makes me think it's the heavy trigger pull that's bugging me rather than any roughness or grittiness often complained about on the Shield.
Quote:
Originally Posted by Yankee45 View Post
People who change out their sear or put in a whole trigger kit just to smooth out their gritty trigger pull are spending more money than they need to as, unless something else is wrong, its the striker block that causes the gritty feeling.
I looked into the sear only based on other people's reviews on them and didn't want to mess with removing the rear sight. Some did mention that there were burrs in the bore of the striker block. The entire kit makes it a $500+ gun to me

I was torn between the PC and non-PC and specifically looked at the trigger of each. Though in limited dry-firing in the LGS, I couldn't tell enough of a noticeable difference between the two and the concerns with the ported barrel (picky w/ ammo, firing from the hip, etc) that I read about ultimately made me choose the non PC. Would have liked the fiber optics though.

Ive never dry fired a Shield with an Apex kit but the reviews made it seem a huge NOTICEABLE difference, and made me think money would be better spent with an Apex kit vs the PC version.
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Old April 9th, 2017, 04:50 PM   #9
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Originally Posted by greeenteeee View Post
With sear deactivated, it doesn't feel rough to me at all, just the click. But this is the first pistol I've had a complaint with the trigger in any way at all.

Are you saying, you notice NO difference at all with the sear deactivated and when activated?

I do notice a difference once I re-activate the sear, which makes me think it's the heavy trigger pull that's bugging me rather than any roughness or grittiness often complained about on the Shield.

I looked into the sear only based on other people's reviews on them and didn't want to mess with removing the rear sight. Some did mention that there were burrs in the bore of the striker block. The entire kit makes it a $500+ gun to me

I was torn between the PC and non-PC and specifically looked at the trigger of each. Though in limited dry-firing in the LGS, I couldn't tell enough of a noticeable difference between the two and the concerns with the ported barrel (picky w/ ammo, firing from the hip, etc) that I read about ultimately made me choose the non PC. Would have liked the fiber optics though.

Ive never dry fired a Shield with an Apex kit but the reviews made it seem a huge NOTICEABLE difference, and made me think money would be better spent with an Apex kit vs the PC version.
Just my 2cents... i would think you`ll find apex parts much easier than PC parts. And the apex parts ARE a HUGE improvement.

As for the shield`s ported barrel... you`ve been mis-led by VERY old rumors. I`ve shot my PC ported shield many times from the hip... no blast has ever hit me from the ports. Take into consideration, for MANY MANY years, people carried revolvers, wanna talk about flash..?? The ported PC`s are perfectly fine for a carry gun. As for picky ammo in the PC`s... i`ve got ported and non-ported shields, neither model has issues with ammo, at all, so long as its good american made ammo.
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Old April 9th, 2017, 05:56 PM   #10
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Just my 2cents... i would think you`ll find apex parts much easier than PC parts. And the apex parts ARE a HUGE improvement.

As for the shield`s ported barrel... you`ve been mis-led by VERY old rumors. I`ve shot my PC ported shield many times from the hip... no blast has ever hit me from the ports. Take into consideration, for MANY MANY years, people carried revolvers, wanna talk about flash..?? The ported PC`s are perfectly fine for a carry gun. As for picky ammo in the PC`s... i`ve got ported and non-ported shields, neither model has issues with ammo, at all, so long as its good american made ammo.
Yep.

When I shoot my PC Shield 9 from 1/2 hip or low retention; there's NO soot on my white shirt.

For inquiring minds, I usually wear white to the range cause it's so hot there for most of the year.
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Old April 10th, 2017, 04:31 AM   #11
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The newer PC OEM striker block has a more rounded profile, similar to the APEX, but not the same.
True. The two striker blocks are similar but not exactly the same. That said, it is difficult for me to imagine that replacing the newest PC striker block with an APEX Ultimate Striker Block is going to make the trigger feel any smoother. To me, the profile of the newer PC striker block is most like the old version of the APEX striker block but not exactly the same.

Last edited by Yankee45; April 10th, 2017 at 04:35 AM.
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Old April 10th, 2017, 04:42 AM   #12
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Originally Posted by greeenteeee View Post
With sear deactivated, it doesn't feel rough to me at all, just the click. But this is the first pistol I've had a complaint with the trigger in any way at all.

Are you saying, you notice NO difference at all with the sear deactivated and when activated?

I do notice a difference once I re-activate the sear, which makes me think it's the heavy trigger pull that's bugging me rather than any roughness or grittiness often complained about on the Shield.
No, I was referring to the fact that with original sear vs the PC sear there was no difference in the slight bump feel of the trigger pull when the trigger bar begins to engage the striker block while the sear is deactivated. If you want to isolate what your trigger bar engaging your striker block operation feels like by itself you can disable the sear with the sear disconnect lever and test away for striker block feel.

Yes, it may be the heavy trigger pull that is bothering you. I don't know how heavy your trigger is but you may want to go with the APEX sear if you want a significantly lighter trigger as the PC sear alone only dropped my Shield's trigger pull to a hair over 5 lbs which is within the range of 4 1/2 to 5 1/2 lbs that I expected and wanted. This is a defensive pistol and I don't want it to go bang without intention during an emergency situation when reacting quickly. The PC sear isn't for everyone by any means. If I wanted an even lighter trigger, the APEX sear and other parts or modifying my sear face would be the way to go. The right combination of APEX sear and springs can be tailored to just about whatever trigger pull weight you might want on your pistol including A 5 lb trigger like mine. If you're not sure and want to play with things, I think that APEX is the way to go. The PC sear has a pronounced ledge on the upper face of it (likely required by S&W lawyers) which limits how low the trigger pull weight can go while the APEX sear does not have that. I didn't use the PC sear because I think it is overall any better. I used it based upon my previous experience with it. It works for me and does what I want for my pistols, but many others may need or want something different and APEX has the parts to make it every which way while S&W does not. I do suspect that the newer more rounded PC striker block may be more to my liking than the APEX striker block as I like it in my friend's PC 9 mm Shield, but perhaps it's only in my mind. In any event I can't find a PC striker block anywhere so I bought an APEX USB.

Last edited by Yankee45; April 10th, 2017 at 01:48 PM.
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Old April 10th, 2017, 05:15 AM   #13
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I've never dry fired a Shield with an Apex kit but the reviews made it seem a huge NOTICEABLE difference, and made me think money would be better spent with an Apex kit vs the PC version.
If you want a huge difference in trigger weight feel, I think that you would be happier with an APEX DCAEK which can be had for $69.00, I believe, if you look around or you could get their competition kit if you only want to use it for a range gun.
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Old April 10th, 2017, 06:46 PM   #14
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If you want a huge difference in trigger weight feel, I think that you would be happier with an APEX DCAEK which can be had for $69.00, I believe, if you look around or you could get their competition kit if you only want to use it for a range gun.
If you replace the stock sear and striker block with the Apex sear and striker block, along with the springs that come with them; you get a clean trigger pull that's lighter than the DCAEK, heavier than the CAEK, and for less $$.

That's the mod I do on all my carry M&Ps.
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Old April 10th, 2017, 07:29 PM   #15
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Rick, What you have done is exactly what I would do if I wanted a lighter trigger than what I have now. I wouldn't need the heavier APEX trigger return spring in the APEX DCAEK. However, if he wants to play with different trigger weights, then he might need that spring as well. My M&P pistols haven't been shot that much but I expect the original springs to relax a little more after a couple of thousand rounds have been shot through the guns.

Last edited by Yankee45; April 10th, 2017 at 07:36 PM.
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