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trigger return spring

This is a discussion on trigger return spring within the MP SHIELD Pistols forums, part of the Smith & Wesson MP Forum category; Buying an Apex trigger kit (100-051) for the Shield and want to know if there are any known issues with keeping the factory trigger return ...


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Old December 11th, 2016, 11:15 AM   #1
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trigger return spring

Buying an Apex trigger kit (100-051) for the Shield and want to know if there are any known issues with keeping the factory trigger return spring in place. I have read it will result in a lower trigger pull weight than replacing it with the one in the Apex kit. I like the idea of a lower trigger pull weight but if leaving the factory spring in place may result in my gun having issues I will go ahead and replace all the springs. Any opinions? Thanks
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Old December 11th, 2016, 05:18 PM   #2
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Originally Posted by Chowda View Post
Buying an Apex trigger kit (100-051) for the Shield and want to know if there are any known issues with keeping the factory trigger return spring in place. I have read it will result in a lower trigger pull weight than replacing it with the one in the Apex kit. I like the idea of a lower trigger pull weight but if leaving the factory spring in place may result in my gun having issues I will go ahead and replace all the springs. Any opinions? Thanks
Depends on which kit you get.

The CAEK comes with a lighter trigger return spring.

Apex staff told me that the DCAEK comes with a trigger return spring one pound heavier than the stock spring. Because of that, I don't use a kit on any of my carry M&P's. I replace the stock sear and striker block with the Apex parts, including their springs, but keep the stock trigger and trigger return spring.
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Old December 11th, 2016, 05:48 PM   #3
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From a functional standpoint, no. As long enough force is present when all parts in place to move the trigger hinge before the trigger nub (I have no idea what it is really called) hits the frame. I have mixed and matched the trigger springs with Apex DCAEK kits.

Only one time was it an issue and that was on Comp kit for me. Had to use the factory trigger spring until Apex supplied the proper USB and USB spring for a CORE. Once they sent me the correct part, lighter trigger spring worked fine.
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Old December 12th, 2016, 05:32 AM   #4
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I'll be going with the DCAEK kit, I believe it's the only type offered for the Shield, and will ask the gunsmith to leave the factory trigger return spring in place (unless someone else can explain why it'd be a bad idea). I appreciate the responses.
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Old December 12th, 2016, 01:16 PM   #5
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I have the DCAEK kit and used the factory trigger return spring and I polished all the parts that i could. My trigger comes in around 3.5 to 4lbs. I'm waiting for there Apex Flat-Faced Action Enhancement Trigger for M&P Shield. When I get the trigger I will replace the trigger spring with the Apex trigger spring. The 3.5 to 4lbs is just to light for me. I'm hoping for 4.5 to 5lbs. I will let you know I should get the trigger in the next few days.
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Old December 13th, 2016, 07:08 AM   #6
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Thanks again for the responses. I did email Apex and got a response back today.

This is the response I got directly from Apex regarding using the factory trigger return spring vs the Apex supplied spring for the Shield:

Chowda,

Thank you for contacting us. As long as you do not live in a heavy trigger
pull state like Massachusetts, your factory trigger return spring will be
about .5-1lb lighter than the spring that is included with our Shield
Duty/Carry kits. Our Shield kits are designed to keep you at or above
average CCW trigger pull weight. In our kits, it is the sear that drops the
weight. Our spring is heavier than factory to bring the weight back up to a
safe and comfortable carry weight. Due to factory tolerances, some firearms
just pull heavier than others so installing your factory trigger return
spring can bring you closer to the trigger pull weight you would like to
have. Using the factory spring will not damage your firearm. We just do not
recommend going below the average CCW trigger pull weight since the Shield
is intended for carry use.

We hope this information helps. Please feel free to contact us if you have
any further questions.

Jenna

Last edited by Chowda; December 13th, 2016 at 07:42 AM.
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Old December 13th, 2016, 01:25 PM   #7
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Well my Apex Flat-Faced Action Enhancement Trigger for M&P Shield came today. I just installed it and used the Apex trigger spring. I did have to open up the trigger opening a little. There was a little interference between the trigger and the frame. I love the trigger and the Apex trigger spring brought my trigger pull up to 4.5 to about 4.8 lbs. I'm happy with the trigger pull now.
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Old December 14th, 2016, 12:42 AM   #8
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Glad it worked out for you Kush. I'm not asking to have anything polished so hopefully mine will end up around 4.5-5 lbs. If it feels too light I'll consider have the Apex spring installed.

Last edited by Chowda; December 14th, 2016 at 12:49 AM.
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Old December 24th, 2016, 06:42 AM   #9
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Dropped the gun off at the shop yesterday to have Apex kit installed. It'll be a few weeks before I'm able to shoot it but I'll let you know how it goes once I do. I instructed them to use the factory return spring but that if the trigger pull drops below 4lbs to install the Apex spring. Hope this turns out good.
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Old January 4th, 2017, 02:52 AM   #10
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Was told my gun is ready for pick up and that the trigger feels real nice. I won't be home until the 20th to pick it up but am anxious to shoot it. I also have a Ruger LCP Custom I want to shoot and an AR 15 I ordered on Dec 30th that I will be picking up on the 20th as well.
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Old January 4th, 2017, 05:48 AM   #11
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Quote:
Originally Posted by Chowda View Post
Was told my gun is ready for pick up and that the trigger feels real nice. I won't be home until the 20th to pick it up but am anxious to shoot it. I also have a Ruger LCP Custom I want to shoot and an AR 15 I ordered on Dec 30th that I will be picking up on the 20th as well.
Sounds like you had a good Christmas!
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Old January 4th, 2017, 08:26 AM   #12
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Yeah, being your own Santa Clause has its advantages.
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Old January 19th, 2017, 02:45 PM   #13
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Picked up my Shield today. The gunsmith the gun was sent to didn't say if he used the original trigger spring or the Apex supplied spring but the pull went from 7.5 lbs to 5.25 lbs. It feels great! Light, crisp and the reset feels shorter. Haven't fired it yet but I think I'm going to like it.
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Old January 19th, 2017, 05:31 PM   #14
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Originally Posted by Chowda View Post
Picked up my Shield today. The gunsmith the gun was sent to didn't say if he used the original trigger spring or the Apex supplied spring but the pull went from 7.5 lbs to 5.25 lbs. It feels great! Light, crisp and the reset feels shorter. Haven't fired it yet but I think I'm going to like it.
Based on the 5.25 pound pull; I'd say he used the trigger return spring that came in the DCAEK.
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Old January 19th, 2017, 05:41 PM   #15
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Whichever he used I'm happy with it.
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