• Reduce your S&W J Frame Trigger Pull by nearly 40%
  • Smooth Crisp J-Frame Action!
  • Best S&W J Frame Trigger Job for a Smoother more Reliable Trigger Pull!
  • Improve accuracy and overall performance
  • Highest Quality American Spring Steel ASTM A228 Music Wire
  • Protected by the M*CARBO 100% Lifetime Guarantee
  • Made in the USA!
  • Fast Same Day Shipping!

S&W J Frame Trigger Spring Kit

  • Custom Lighter J-Frame Trigger Return Spring
  • Custom Lighter J-Frame Hammer Spring

Reduce your S&W J Frame Heavy 10-12lb Trigger pull to a smoother cleaner 8-9lb double action trigger pull!  Custom S&W J Frame Trigger Job by M*CARBO to guarantee the most reliable performance over any other S&W J Frame Trigger Job.  

S&W J Frame Trigger Kit is made of the Highest quality ASTM A228 Music Wire right here in America!  The S&W J Frame Trigger Kit will improve your accuracy and tighten your shot groups.  If your looking for S&W J Frame Accessories then you need to do a S&W J Frame Trigger Job and Feel the difference yourself!  Custom manufactured Smith and Wesson J Frame Parts for superior performance!  Watch the Smith and Wesson J Frame disassembly and re-assembly installation video by M*CARBO for easy installation.  Custom S&W J Frame Spring Kit for Unmatched Results and Performance! 

S&W J Frame Owners Manual & Exploded View plus Smith and Sesson J frame Serial Number Lookup:

If your getting the S&W J Frame Trigger Spring Kit, then you might find the following S&W J Frame Resources useful in further enhancing your firearm. Download the S&W J Frame Owners Manual or use the Exploded View of the S&W J Frame Parts Diagram to plan your next firearm project. Print or Download the S&W J Frame Trigger Spring Kit Instructions by MCARBO.  Also use the Smith and Wesson J Frame serial number lookup to help identify the date of manufacture. 

No Hassle 100% Lifetime Guarantee on Parts & Accessories:

The Smith and Wesson J Frame 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:

M*CARBO ASTM Spec Springs used in the Smith and Wesson J Frame Trigger Spring Kit 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 J Frame 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 J Frame 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 J Frame 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 9 Reviews:

Great product

Excellent product as I have come to expect from Mcarbo made my trigger pull extremely manageable

Excellent trigger pull and outstanding trigger return

I had first installed the Apex kit and the trigger return was horrible, very gritty. I installed this kit and what a difference !!


S&W J-Frame Trigger Spring Kit

S&W 638
DA 12.1 oz down to 11.9
SA 3.11 oz. no change
I put a kit into my SP101 and was real happy with the results. The J frame kit was disappointing, no real change, followed the instructions to the letter. No way close to a 40% reduction. wondering if I got the wrong springs.

Worth Considering

I have the 360 PD. Stock trigger pulll is pretty tough. The kit installs easily, just watch the video, and does make quite an improvement. Still not quite as nice of a trigger as my LCRX but if you have a J frame you may really want to consider this.

South Texas

All is well

Further to my earlier review
I talked to the guys in the shop and things got better. I found out what the problem was, they helped me correct it, and now the trigger pull is what it should be. Thanks to Dave and the crew!