• Reduce your factory 9-10lb Trigger Pull to a modified 5lb Trigger Pull! (Average results can vary up to +/- 1lb)
  • Ultimate S&W Sigma Trigger Upgrade!
  • Improve S&W Sigma Pistol accuracy and overall performance
  • Nearly 50% Trigger Pull Reduction!
  • Functions in all S&W Sigma Models and Calibers
  • Best Aftermarket SW9VE & SW40VE Accessories!
  • Highest Quality American Spring Steel ASTM A228 Music Wire
  • Kit also includes Assembly Dowel
  • Protected by the M*CARBO 100% Lifetime Guarantee
  • Made in the USA!
  • Fast Same Day Shipping!

S&W Sigma SW9VE & SW40VE Trigger Spring Kit

    Consists of a Custom Lighter SW9VE / SW40VE Sear Spring

    Smith and Wesson Sigma SW40VE SW9VE Trigger Spring Kit Parts

      The major complaint with the Smith and Wesson SW9VE / SW40VE is that is has a very heavy 9-10lb factory trigger pull. This leaves a lot of us looking for affordable SW40VE Accessories to make further improvements on factory parts. SW9VE Accessories should include the Best Custom SW40VE Trigger Fix for the money! 

      Fast Installation SW9VE Trigger Job for a 50% Trigger Pull Reduction. This is a must have SW9VE Trigger Fix on your SW9VE Aftermarket Parts List!

      Smith and Wesson SW9VE Trigger Kit will improve accuracy and tighten your shot groups!

      Aftermarket Smith and Wesson SW40VE Parts should give you the most bang for your buck, like the Ultimate SW40VE Trigger Upgrade! One of the Best Aftermarket S&W Sigma Accessories you can make to improve your S&W Sigma Performance!

      These SW9VE Accessories are also compatible as SW40VE Accessories since S&W used a lot of the same parts in their S&W Sigma trigger assemblies. Hands down the Best SW9VE Trigger Kit Available and the Only One Made by Combat Veterans! Take your SW9VE and SW40VE to the Next Level of Competition Performance!

      S&W Sigma SW9VE & SW40VE Owners Manual:

      If you're getting the Smith and Wesson SW9VE / SW40VE Trigger Spring Kit, then you might find the following Smith and Wesson SW9VE / SW40VE Resources useful in further enhancing your firearm for other Smith and Wesson SW9VE / SW40VE Accessories. Download the Smith and Wesson SW9VE / SW40VE Owners Manual.

      M*CARBO No Hassle 100% Lifetime Guarantee:

      The S&W Sigma SW40VE/SW9VE Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

      M*CARBO Lifetime Guarantee

      Drop Tested and Approved:

      SW9VE / SW40VE Trigger Spring Kit is an M*CARBO ASTM Spec Spring that will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 9" & 12"+).

      Range Tested and Approved:

      The Smith and Wesson SW9VE / SW40VE Trigger Upgrade Trigger Spring Kit has been tested repeatedly with numerous brands of ammunition to ensure reliable operation and safety.

      Veteran Owned and Operated Business:

      American made Smith and Wesson SW9VE / SW40VE Trigger Upgrade Trigger Spring Kit designed and manufactured by Combat Veterans. We will donate a portion of your purchase to the Military Foundations we humbly support.


      You must be 18 yrs of age to purchase. We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Modifying your weapon may be prohibited in your state. Do not modify your sear or hammer engagement surfaces, with or without the Smith and Wesson SW9VE / SW40VE Trigger Upgrade Trigger Spring Kit. Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that may be incurred.

      Overall Customer Rating of 127 Reviews:

      Trigger spring kit

      I bought two of these kits. I installed the first kit just as the video showed. It was just as easy as video! I compared the trigger pull on it to another gun just like it and WOW! what a difference it was like a totally different gun. It was way easier to pull the trigger. I don’t have a way of measuring the difference but it’s really easy to tell the difference. I went ahead and installed the other kit on another gun and the only problem I had was the spring tool that was sent in the second kit was too long. Luckily I saved the tool from the first kit and I was able to complete the install.

      Was pleased with how it improved trigger pull. Shipping was quick.


      10lb factory pull

      This pistol is just ridiculous from the factory. I had 10lb before the spring install. After installing the mcarbo spring and polishing internals it dropped to 8lbs. I however was not happy with the trigger pull but my coworker loved it. Waiting to retest trigger pull after 200 rounds to get final weight reduction measurement.

      Sw9ve spring

      Just installed my 5lb trigger spring. Installation was a breeze with the Installation videos provided by mcarbo, you guys are awesome ,keep up the good work.

      North Carolina

      installed trigger spring kit,not easy but got it,have not shot it but seems to lightened the trigger pull,thanks b.hinson

      Number of questions: 0