• 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.

No Hassle 100% Lifetime Guarantee on Parts & Accessories:

The Smith and Wesson M&P Shield Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee. This means that at any time you can send it back and we will exchange it, issue a refund or assist you in any way possible. We even pay return shipping and automate the return process here!

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 16 Reviews:

5 star great product for a great price

Shipping and customer service were top notch. Followed along with video which was easy to follow and detailed. The trigger feels much smoother. Crisp break. I don't have a trigger scale but it feels way better than before. Do yourself a favor and order the polish kit while the gun is apart. My POS computer wouldn't let me click on the 5th star but I would rate it 5

Still 5.5 lb trigger

Installed on 1st gen 9mm Shield. I ordered the polish kit, CLP, and gunsmith block from M.Carbo. Got a 2 sdp Dremel & hammer off Amazon. I followed the You Tube instruction video carefully. Trigger pull feels smooth but still heavy, measures 5.5 lbs. I really hoped for close to 3.5.

Western North Carolina

Helped with a MA compliant trigger on a .40 cal 1st gen shield

I recently ran across a deal I could not refuse on a .40 cal S&W Shield 1st gen. The guy getting rid of it hated the trigger pull. Even though we live in North Carolina he had a MA compliant pistol with the supposed (10.5lb trigger). When I bought it, I used my digital trigger pull scale that maxes out at 12lb, well it would read "over" prior to striker fall every time!!! I thought about getting a Apex trigger kit but then I ran across the M*CARBO spring kit and decided to try this kit. After doing the work described in the video the trigger was much smother and went down to 7.8lb trigger pull. Still wanting to improve it I found a old striker block from a 9mm shield I had done a trigger upgrade on in the past. After polishing it and putting it back together.............. I am now getting a 4lb trigger pull!!!! and as stated in the video........ as smooth as butter!!! Thanks M*CARBO


S&W M&P Shield Trigger Spring Kit

I purchaces a kit a few months ago for my M&P Shield 9mm. Trigger pull was awfull for a 2.0. Pollished parts and installed as decribed in online video. Wow..this is how they should function from S&W. My wife liked it so much she bought a 9mm and I also obtained a 40S&W Shield.We ordered kits for the both and I went through the ritual. Before and after function does make it a ritual compared to what the factory calls a firearm. Also like to add M*CARBO is very fast getting your order to you and packaged so no damage should occure.


Shield 9 M1 and M2

Just finished polishing and installing the Trigger Spring Kit on my latest Shield 9, M2 with built in laser and give the product and process an A+ across the board. The trigger pull weight and smoothness is heavenly and I'm ordering two more spring kits for my other two Shield 9s M1's and expect the same result. Thanks again for the service, product, and quick delivery.