• Reduce your stock DA 10lb Trigger pull to a modified 6lb DA Trigger Pull (Average results can vary up to +/- 1lb)
  • 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
  • Will NOT work with Rimfire Models or M&P Bodyguard 38
  • 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 Rebound Spring (13lb)
  • Custom Lighter J-Frame Hammer Spring (8lb)
Smith and Wesson J Frame Trigger Spring Kit Parts

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 you're 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 Resources:

If you're 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. 

M*CARBO No Hassle 100% Lifetime Guarantee:

The S&W J-Frame Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

M*CARBO Lifetime Guarantee

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 87 Reviews:
Nashville, TN

J frame Spring Kit

This spring kit was very easy to install and brought the pull from ten lbs to 6 lbs.
I recommend this kit very highly.

W. Palm Beach

S&W Model 317, and Model 36

Bought 2 J frame spring kits for the aforementioned revolvers. The Model 317 Kit gun had an original trigger pull average of 10.8 lbs. After the 10 minute install of the spring kit, I was pleased to see a 5.2 lb. trigger pull. Since the install I have lost this gun......it is now my wifes favorite. The Model 36 not quite as impressive as the 317, went from an 8.4 lb trigger pull, to a 4.9 average. Again my wife is happy, because this is her second favorite gun now. I am well pleased with the outcome of both kits. Testing will be this weekend! Keep the kits coming!

New Jersey USA

Very Satisfied

The Customer Service is 5-Star. A great group of Patriots.
I'm reasonably technical so the installation went well. The trigger pull went down from 13lbs to about 8lbs. I would have prefered a little less, but I'm considering a break in period.
These folks are great to do business with


S & W 642 trigger pull

This company has outstanding customer service. There're are great videos and written instructions to help with instillation. I was a little disappointed with the springs. The stock trigger pull was 12+ Lbs. after the new springs it was only reduced by about 2 Lbs. I sent an email to their customer service asking about this. The next morning I had an answer to my concerns. Answer...the trigger pull will lighten up more with use, kind of thought that but what great customer service. I like this company!

Major Disappointment

The gun had a 10.5lb trigger pull and after watching their product video and reading the description I was excited to install this spring set and would have been happy with anything even close to the advertised 6lb DA pull weight. After installing the spring kit, to my surprise, the DA pull weight actually increased to 12.5lb. Extremely disappointed. I ordered another spring set from Wilson combat.

Number of questions: 0