Apex Sigma Kit Online And Ready For Sale

Our new Sigma Spring Kit is up online for sale.


Here’s the product information.

Apex Sigma Spring Kit
Products included: 4
A) Apex Sigma Trigger Return Spring
B) Apex Sigma Striker Block Spring
C) Apex Sigma Striker Spring
D) Apex Sigma Slave Pin

What it does
The Apex Sigma Spring Kit is designed as a drop in spring kit for the S&W Sigma Series pistol. This kit was developed to reduce trigger pull weight while maintaining reliability. By installing our reduced weight striker block spring, the Sigma trigger pull is smoothed up and the reset becomes more pronounced. The reduced weight trigger return and striker springs allow for less uptake pressure to provide an easier trigger pull every time.

Expected results
• Smoother trigger pull
• Smoother reset
• Trigger pull weight reduction by nearly 2lbs from factory pull weight

Applicable to the following guns
All Smith & Wesson Sigma “C” , “F” & “VE” model Semi Auto Pistols.

This kit is different from the SD kit. The striker spring is longer to accommodate the Sigmas need for a longer striker spring. If you need a kit for your SD, see our SD SPRING KIT PAGE

Retail: $19.95

scott / September 12, 2012 / Random Apex


  1. S&W SW40VE Sigma Trigger pull
  2. Sw9ve. Looking for goodies
  3. Barry Smith - September 19, 2012 @ 3:36 pm

    Received Apex Sigma Spring Kit this week and just had the chance to install. The SD video was helpful but the SW40VE Striker assembly is a little different from the SD. However there are YouTubes that show how to change the spring so no big deal. I did NOT want to do the “trigger modification” going around on the Web because of reliability issues. (If a single spring was enough on the trigger sear then S&W would have left it with one.) I need to know that when I squeeze the trigger it goes BANG! My Sigma is a slightly older model so the trigger pull was probably between 7 to 9lbs. After the upgrade I’m looking at about 4 to 5lbs. With no real safety to speak of this is perfect. Apex did a great job on research and product and I am VERY happy! I recommend this to every Sigma owner out there. Don’t risk the “single” spring deal, you may not live to regret it. Many thanks to Scott and the gang! Great Job!!! I can’t wait to add the new Stingray SR3 Laser Sight by Arma Laser and send some rounds down range. Thanks again Apex Tactical!

  4. Marijan PETEK - May 14, 2016 @ 10:06 am

    Dear Sirs.

    I own a SW – model SW9GVE 9mm semiautomatic Pistol, and I would like to reduce a Trigger Pull&weight with Your Aftermarket Trigger group springs kit…

    Which of Your product is compatible with my SW Pistol!?

    Best regards – Marijan

  5. paul - May 24, 2016 @ 11:00 am

    For the Sigma, we offer an spring kit and an Action Enhancement Trigger.



  6. Erick - September 5, 2016 @ 3:02 pm

    Hey will the Apex Trigger fit in SW40VE

  7. paul - September 7, 2016 @ 9:55 am

    Applicable To What Gun(s)
    Works in Smith & Wesson SD, SD-VE & Sigma Series Semi Auto Pistols – 9, 40 and .357 Sig models included. SD9, SD40, SD9VE & SD40VE.
    Works in conjunction with the Apex SD Spring Kit or Apex Sigma Spring Kit, or as a stand-alone with the factory components.

  8. Doug Stewart - March 4, 2017 @ 11:13 pm

    I have the SW40VE I keep seeing sd-ve will this fit the SW40VE I just want to be sure I get the right spring and trigger kits or do I need to find the kits that specifically says SW40VE

  9. paul - March 6, 2017 @ 3:22 pm

    Yes. It works in the 9mm and the 40S&W.

  10. Carlos Franco - April 28, 2017 @ 12:18 am

    Looking for a kit to fit my SW9V , will this work on my model ?

  11. paul - May 4, 2017 @ 7:52 am

    This kit is designed for the Sigma pistol, so yes.

  12. HSPHIPPS - October 7, 2017 @ 1:35 pm

    Will this work with a Sigma SW40V?

  13. paul - January 11, 2018 @ 1:46 pm


  14. Beastnu - June 23, 2018 @ 12:46 pm

    Do you need to swap the slave pin. I just noticed I bought a kit without the slave pin. Do you guys just sell the slave pin

  15. paul - June 25, 2018 @ 7:53 am

    No, you do not need the slave pin. You can use your pin punch.

  16. Michael - July 26, 2018 @ 12:11 pm

    I want a new trigger not just a spring kit. Do any of your triggers fit the sw40v?

  17. paul - July 31, 2018 @ 7:38 am

    Part #107-003 Action Enhancement Trigger

    Applicable To What Gun(s)
    Works in Smith & Wesson SD, SDVE & Sigma Series Semi Auto Pistols – 9, 40 and .357 Sig models included. SD9, SD40, SD9VE & SD40VE.
    Works in conjunction with the Apex SD Spring Kit or Apex Sigma Spring Kit, or as a stand-alone with the factory components.

  18. Craig S. - August 28, 2018 @ 10:15 pm

    I hardly can find any mention of the SW9E anywhere, other than it has night sights. Although it does night mention this specific model -“E”, I believe this upgrade should work. Correct?

  19. scott - September 2, 2018 @ 8:20 am

    To our knowledge, it will work.

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