• Reduce your trigger pull from a stock 5.5 lbs to a modified 2.5 lbs
  • Works for M&P Shield 1.0 & 2.0 Models 
  • Fits all Shield Pistols chambered in 9mm | .357 | .40 cal | .45 ACP.
  • Custom Smith and Wesson Shield Trigger!
  • 55% Trigger Pull Reduction!
  • Works for S&W M&P 1.0 or 2.0 Shield chambered in 9mm, 40 cal and .45 caliber pistols
  • Improve accuracy and overall performance
  • Get the complete S&W M&P Shield Trigger Job!
  • Highest Quality American Spring Steel ASTM A228 Music Wire
  • Do you want Us to Install the Parts and Do the Polishing Work for You?
  • Made in the USA!
  • Fast Same Day Shipping!
  • Protected by the M*CARBO 100% Lifetime Guarantee

Smith and Wesson M&P Shield Trigger Spring Kit 1.0 & 2.0 - 9mm | .357 | .40 cal | .45 ACP

  • Custom Lighter Striker Block Spring
  • Custom Lighter Sear Spring
  • Custom Lighter Striker Spring
  • Custom Heavy Duty Trigger Return Spring ( Extra power reduces the felt trigger pull weight)
  • Includes Trigger Spring Installation Tool
  • 1,000 Grit Silicon Carbide Sandpaper
  • Synthetic Grease with PTFE

Reduce your S&W Shield Trigger Pull from a Stock 5.5 lbs to a Modified 2.5 lbs.  Smith and Wesson Shield Trigger Spring Kit will give your trigger a smoother, lighter, more crisp feel to your trigger pull. Best S&W Shield Trigger Upgrade to reduce your Trigger Pull by 55%  

  • Works for S&W M&P 1.0 & 2.0 Shield Models chambered in 9mm, .357,  40 cal and .45 caliber pistols

We highly recommend doing the polishing of all the internal components with this Firearm Polishing Kit.

Best Smith and Wesson Shield Trigger Job Available!  Custom Smith & Wesson Shield Upgrades for a Smoother and Lighter S&W Shield Trigger!  Check out the Installation video for Step by Step instructions on How to Polish S&W Shield Trigger! 

A must have Smith and Wesson Shield Accessories for all S&W M&P Shield 1.0 & 2.0 Pistols!  Custom Smith and Wesson Shield Trigger for all Smith and Wesson M&P Shield 9mm Accessories.  Also works for Smith and Wesson M&P Shield 40 Accessories.

The S&W Shield Extra Power Trigger Return Spring is 28% more powerful than stock which seems unnatural but it helps to reduce the felt trigger pull due to the design of the internal trigger mechanism and simultaneously provides increased tension that gives extra strength for a faster trigger reset.

S&W M&P Shield Trigger Kit will give your trigger a smoother, lighter, more crisp feel to your trigger pull. Our springs are American Made with the Finest American Spring Steel for quality that will last!  M*CARBO specializes in Smith and Wesson Shield Aftermarket Parts!

 Smooth S&W Shield Trigger Action and Superior Performance!  Works for all Smith and Wesson M&P Shield 1.0 & 2.0 Models chambered in 9mm | .357 | .40 cal | .45 ACP.

Ultimate Aftermarket S&W Shield Trigger Upgrade for Available S&W Shield Trigger Kits! Watch the Step by Step S&W M&P Shield Trigger Spring Install of S&W Shield Trigger Mods and see How to Polish the S&W Shield Trigger! 

Best Custom Smith and Wesson Shield Trigger Job for a Complete Match Trigger!

Custom Smith and Wesson Shield Trigger Job includes accurately calibrated spring weights deliver consistent force through the entire compression and release cycle to give you a light, refined trigger pull without sacrificing the reliability of your pistol s Safe Action system. S&W Shield Trigger Return Spring has nearly 30% more power than factory spring, which actually reduces pull by as much as 1 lb. for improved control. This produces faster trigger reset for quicker follow up shots. 

Smith and Wesson M&P Shield Owners Manual & Exploded View:

If your getting the Smith and Wesson M&P Shield Trigger Spring Kit, then you might find the following M&P Shield Resources useful in further enhancing your firearm. Download the Smith and Wesson M&P Shield Owners Manual or use the Exploded View of the M&P Shield Parts Diagram to plan your next firearm project.

M*CARBO No Hassle 100% Lifetime Guarantee:

The Smith and Wesson M&P Shield Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

Drop Tested and Approved:
Smith and Wesson M&P Shield Trigger Spring Kit includes M*CARBO ASTM Spec Springs 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 M&P Shield 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 M&P 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 M&P Shield 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 52 Reviews:
Montana, U.S.A.

Spring Kit Shield 9mm 1.0

Great parts, and fast shipping. Installation was a breeze, the video was well done and a great help. Thanks again!!

40 trigger kit.

I bought both trigger kit and polish kit. It took me ( a novice) about 2-1/2 But I had nothing planned and could take my time. I used a small punch to hold the sear and found that a lot easier to polish on my block. The video was amazingly informative. And I followed the steps and everything went in perfectly. Definitely excited to shoot gun with the new upgrade. Thanks. I’ll be getting one for my wife’s 9mm also.


Maryville TN


Night and day for 20buck you can’t beat it best money I’ve spent to date on my 40. I’ve never worked on a gun ever and with the videos it was a walk in the park. Now Mcarbo hurry up with a trigger shoe for the shield 2.0. Please PLEASE Please lol

Kuna Idaho

I’m lovin it

I’m really liking this trigger kit on my shield 45 ACP. It feels like night and day when it comes to performance. Smooth like butter

Tulare, CA


This product was great along with the video. I didn’t get the 2.5lb trigger pull felt close to the same just a whole lot cleaner and crisper. Definitely worth the $