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  • Labeled S&W J Frame Trigger Spring Kit
  • Smith and Wesson J Frame Trigger Kit M*CARBO
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S&W J-Frame Trigger Spring Kit

review-star review-star review-star review-star review-star
(4.52) 153 reviews
Price: $24.95
in-stock-product Availability: IN STOCK

Retail: Retail: $29.95

You Save: $5.00 (16.7%)


Quantity:
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Product Information

About This Item

WHAT'S IN THE KIT:

  • 1 - Reduced Power Trigger Rebound Spring
  • 1 - Reduced Power Hammer Spring
  • 1 - Reduced Power Cylinder Stop Spring
  • 1 - Reduced Power Firing Pin Spring

Installation Video

Description

S&W J Frame Trigger Spring Kit

Transform your S&W J Frame's hefty ~11-12lb trigger pull into a smoother, more refined ~8.5lb double-action trigger pull with M*CARBO's custom trigger job. Engineered for superior reliability and performance, this kit is a must for those seeking the best in their S&W J Frame.

NOT COMPATIBLE WITH RIMFIRE MODELS OR M&P BODYGUARD 38

Manufactured in America, the S&W J Frame Trigger Kit is crafted from the highest quality ASTM A228 Music Wire. Enhance your accuracy and achieve tighter groupings by optimizing your J Frame's trigger. Experience the difference firsthand and elevate your firearm's performance with our custom-made parts.

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.

Smith and Wesson J Frame Owner's Manual
Smith and Wesson J Frame Exploded View
Smith and Wesson J Frame Internals View
Smith and Wesson J Frame Trigger Spring Kit Printable Instructions

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.

Tested and Approved:

The S&W J-Frame Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made S&W J-Frame Trigger Spring Kit is designed and manufactured by Combat Veterans. We will donate a portion of your purchase to the Military Foundations we humbly support.

ATTENTION:

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 S&W 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.

Reviews
Worth Every Penny!
review-star review-star review-star review-star review-star
I bought my fiance a S&W 38 Centennial J-frame and she loves it but struggles with the trigger pull. I was hesitant to attempt this trigger modification, although I'm fairly mechanical and built models as a youth. The video on their website was incredibly helpful and I simply watched each step, paused it and repeated it on my end. With proper tools like the bench block, shank tool and polishing kit, I was able to get this done in about 45 minutes. Just make sure you keep the parts organized during disassembly and don't misplace anything... oh, and don't overtighten during reassembly. I thought I had an issue with alignment while pulling the trigger before all of the housing screws were tightened, but once it was assembled correctly it's even smoother than before. My lady loves it now and feels even more confident shooting. Thanks M-Carbo... another great product!
review image  
WOW, what a difference.
review-star review-star review-star review-star review-star
Installed the M*CARBO S&W J-frame trigger spring kit on my S&W model 642 J-frame. Install took about 1/2 an hour only because it was my 1st time working on a revolver. If you are familiar with working on revolvers, it could easily be done in 15 minutes. The youtube video is very informative and easy to follow.
Before the kit was installed I measured the trigger pull at about 12 lbs. on average after 5 pulls. After the install, I am averaging around 7 lbs. 3 oz. per pull. A reduction of 4.5 to 5 lbs.
I shot it for the first time today and WOW, it felt so much easier to shoot. The reduced trigger pull made it much easier to stay on target. I was plannig on taking it back apart and polishing all of the friction points and seeing how much of a difference that makes but I'm not sure it needs that after shooting it. I would recommend this kit to anyone with a J-frame.
Now I'm thinking about doing a M*CARBO trigger spring kit on one of my Glocks. If they are as smooth as the J-frame kit, I'll put one on each of my Glocks.
WOW, what a difference.
review-star review-star review-star review-star review-star
Installed the M*CARBO S&W J-frame trigger spring kit on my S&W model 642 J-frame. Install took about 1/2 an hour only because it was my 1st time working on a revolver. If you are familiar with working on revolvers, it could easily be done in 15 minutes. The youtube video is very informative and easy to follow.
Before the kit was installed I measured the trigger pull at about 12 lbs. on average after 5 pulls. After the install, I am averaging around 7 lbs. 3 oz. per pull. A reduction of 4.5 to 5 lbs.
I shot it for the first time today and WOW, it felt so much easier to shoot. The reduced trigger pull made it much easier to stay on target. I was plannig on taking it back apart and polishing all of the friction points and seeing how much of a difference that makes but I'm not sure it needs that after shooting it. I would recommend this kit to anyone with a J-frame.
Now I'm thinking about doing a M*CARBO trigger spring kit on one of my Glocks. If they are as smooth as the J-frame kit, I'll put one on each of my Glocks.
Most Excellent
review-star review-star review-star review-star review-star
Really great kit. I've never done anything more than clean and change the grips. MCARBO's video and kit took me through it—one shot. Really quite fun! The gun fires much more smoothly. Thanks gentlemen!
review image  
Most Excellent
review-star review-star review-star review-star review-star
Really great kit. I've never done anything more than clean and change the grips. MCARBO's video and kit took me through it—one shot. Really quite fun! The gun fires much more smoothly. Thanks gentlemen!
review image  
Very Disappointing!
review-star review-star review-star review-star review-star
Own numerous Smith revolvers and have performed spring replacements and trigger jobs on all of them. Using my trigger pull scale after finishing yielded minimal results. Should have went with Wolff!
accurate
review-star review-star review-star review-star review-star
easy to install.lowered trigger pull by 4+ pounds on s&w 442 da only. much more manageable trigger pull
Trigger upgrade
review-star review-star review-star review-star review-star
Parts were well packaged, video for removal/install great. Took 20 minutes!
Questions & Answers
0 0
Question:
Can I use just the hammer spring and the trigger return spring without using the firing pin and cylinder stop springs?
JoeW August 10, 2024 11:53 PM
0 0
Question:
Will this work with the sw shield plus?
David Dupre March 5, 2024 3:40 PM
0 0
Question:
Is this capable with a 638-3
mctoomer February 15, 2024 6:56 AM
0 0
Question:
Will this kit work on Taurus revolvers?
Gregory Hill November 11, 2023 12:00 PM
0 0
Question:
I have a mid-fifties Model 40. Will this kit work?
Richard Wood July 30, 2023 2:26 AM
0 0
Question:
How does this do with light primer strikes? I have a 442-2. I've tried the Wilson combat spring kit and the tk customs spring kit and only had liable ignition with federal/ soft primers. Can this kit atleast work with magnum pistol primers?
JimmyBallog June 8, 2023 5:43 PM
0 0
Question:
Will this work with model 15-4 .38 special Smith and Wesson?
AK64 May 30, 2023 9:33 PM
0 0
Question:
I'm asking a previous question that is unanswered. Is this the same kit that was on youtube that reduced the pull on a 642 from 10lbs to 6lbs?
Robert Partington March 12, 2023 9:25 PM
Answers
This is our updated kit for the J-frame. So it will be similar to the old video on YouTube. This is the newer kit, which will work on the 642
Answered by
Kenneth Noble / March 15, 2023 1:49 PM
0 0
Question:
Will this work with 637-2 .38 special+p Smith and Wesson
taylor green March 7, 2023 10:21 AM
Answers
Yes is compatible
Answered by
M*CARBO-Tech / March 7, 2023 12:52 PM
0 0
Question:
Will the kit work in a model 66?
Tom Bailey January 19, 2023 5:22 AM
Answers
It will not work with that particular model, the Model 66 is a K-Frame
Answered by
Timothy Parrish / January 24, 2023 2:16 PM
0 0
Question:
Is this the kit that you showed on YouTube to change the J frame from 10-pound pull to a 6-pound pull? I have a S&W 638. Thanks Kurt
KurtQVMWJPQH September 5, 2022 11:59 AM
0 0
Question:
"Won't work on rim fires" BUT will it FIT in any J frame? I want to take the chance; no returns; I want to try one in a S&W 351 PD to see if it will fit or work?
Quigly56 January 20, 2022 10:47 AM
Answers
We cannot advise that you install this spring kit in a rimfire model as the kit is not guaranteed through our safety testing.
Answered by
Abby Marino / April 13, 2022 9:44 AM
0 0
Question:
Will the J frame spring kit work in a S&W 686
January 11, 2022 7:59 PM
Answers
It wont work is a L-frame the 686
Answered by
Waldo@MCARBO / June 9, 2022 10:20 AM
0 0
Question:
Does this fit smith and Wesson bodyguard .38 special
JasonP87MH283 January 6, 2022 9:42 AM
Answers
Sorry, no it won't work with the bodyguard
Answered by
Waldo@MCARBO / June 9, 2022 10:18 AM
0 0
Question:
will this trigger spring kit work on a J-frame model 60 with a hammer
cdubleu January 1, 2022 8:28 PM
Answers
Yes this spring kit will work in all S&W J-frame models chambered in any centerfire caliber.
Answered by
Abby Marino / January 5, 2022 2:28 PM
0 0
Question:
Will this work with a J-Frame Model 60 .357 w/hammer?
cdubleu December 31, 2021 8:24 PM
Answers
Yes this spring kit will work in your Model 60 J-Frame chambered in .357.
Answered by
Abby Marino / January 5, 2022 1:47 PM
0 0
Question:
I want to reduce the trigger pull. Will this kit to do that?
K9wardog November 11, 2021 5:12 PM
0 0
Question:
will this trigger spring kit work on a 1980 J-frame model 36 with a hammer
June 9, 2021 11:22 PM
Answers
Yes this spring kit will work in a model 36 with a hammer.
Answered by
JakeFromMCARBO / July 15, 2021 9:10 AM

About This Item

WHAT'S IN THE KIT:

  • 1 - Reduced Power Trigger Rebound Spring
  • 1 - Reduced Power Hammer Spring
  • 1 - Reduced Power Cylinder Stop Spring
  • 1 - Reduced Power Firing Pin Spring

Installation Video

S&W J Frame Trigger Spring Kit

Transform your S&W J Frame's hefty ~11-12lb trigger pull into a smoother, more refined ~8.5lb double-action trigger pull with M*CARBO's custom trigger job. Engineered for superior reliability and performance, this kit is a must for those seeking the best in their S&W J Frame.

NOT COMPATIBLE WITH RIMFIRE MODELS OR M&P BODYGUARD 38

Manufactured in America, the S&W J Frame Trigger Kit is crafted from the highest quality ASTM A228 Music Wire. Enhance your accuracy and achieve tighter groupings by optimizing your J Frame's trigger. Experience the difference firsthand and elevate your firearm's performance with our custom-made parts.

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.

Smith and Wesson J Frame Owner's Manual
Smith and Wesson J Frame Exploded View
Smith and Wesson J Frame Internals View
Smith and Wesson J Frame Trigger Spring Kit Printable Instructions

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.

Tested and Approved:

The S&W J-Frame Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made S&W J-Frame Trigger Spring Kit is designed and manufactured by Combat Veterans. We will donate a portion of your purchase to the Military Foundations we humbly support.

ATTENTION:

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 S&W 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.

Product Reviews (153)
review-star review-star review-star review-star review-star
4.52
Worth Every Penny!
review-star review-star review-star review-star review-star
I bought my fiance a S&W 38 Centennial J-frame and she loves it but struggles with the trigger pull. I was hesitant to attempt this trigger modification, although I'm fairly mechanical and built models as a youth. The video on their website was incredibly helpful and I simply watched each step, paused it and repeated it on my end. With proper tools like the bench block, shank tool and polishing kit, I was able to get this done in about 45 minutes. Just make sure you keep the parts organized during disassembly and don't misplace anything... oh, and don't overtighten during reassembly. I thought I had an issue with alignment while pulling the trigger before all of the housing screws were tightened, but once it was assembled correctly it's even smoother than before. My lady loves it now and feels even more confident shooting. Thanks M-Carbo... another great product!
review image  
WOW, what a difference.
review-star review-star review-star review-star review-star
Installed the M*CARBO S&W J-frame trigger spring kit on my S&W model 642 J-frame. Install took about 1/2 an hour only because it was my 1st time working on a revolver. If you are familiar with working on revolvers, it could easily be done in 15 minutes. The youtube video is very informative and easy to follow.
Before the kit was installed I measured the trigger pull at about 12 lbs. on average after 5 pulls. After the install, I am averaging around 7 lbs. 3 oz. per pull. A reduction of 4.5 to 5 lbs.
I shot it for the first time today and WOW, it felt so much easier to shoot. The reduced trigger pull made it much easier to stay on target. I was plannig on taking it back apart and polishing all of the friction points and seeing how much of a difference that makes but I'm not sure it needs that after shooting it. I would recommend this kit to anyone with a J-frame.
Now I'm thinking about doing a M*CARBO trigger spring kit on one of my Glocks. If they are as smooth as the J-frame kit, I'll put one on each of my Glocks.
WOW, what a difference.
review-star review-star review-star review-star review-star
Installed the M*CARBO S&W J-frame trigger spring kit on my S&W model 642 J-frame. Install took about 1/2 an hour only because it was my 1st time working on a revolver. If you are familiar with working on revolvers, it could easily be done in 15 minutes. The youtube video is very informative and easy to follow.
Before the kit was installed I measured the trigger pull at about 12 lbs. on average after 5 pulls. After the install, I am averaging around 7 lbs. 3 oz. per pull. A reduction of 4.5 to 5 lbs.
I shot it for the first time today and WOW, it felt so much easier to shoot. The reduced trigger pull made it much easier to stay on target. I was plannig on taking it back apart and polishing all of the friction points and seeing how much of a difference that makes but I'm not sure it needs that after shooting it. I would recommend this kit to anyone with a J-frame.
Now I'm thinking about doing a M*CARBO trigger spring kit on one of my Glocks. If they are as smooth as the J-frame kit, I'll put one on each of my Glocks.
Most Excellent
review-star review-star review-star review-star review-star
Really great kit. I've never done anything more than clean and change the grips. MCARBO's video and kit took me through it—one shot. Really quite fun! The gun fires much more smoothly. Thanks gentlemen!
review image  
Most Excellent
review-star review-star review-star review-star review-star
Really great kit. I've never done anything more than clean and change the grips. MCARBO's video and kit took me through it—one shot. Really quite fun! The gun fires much more smoothly. Thanks gentlemen!
review image  
Very Disappointing!
review-star review-star review-star review-star review-star
Own numerous Smith revolvers and have performed spring replacements and trigger jobs on all of them. Using my trigger pull scale after finishing yielded minimal results. Should have went with Wolff!
accurate
review-star review-star review-star review-star review-star
easy to install.lowered trigger pull by 4+ pounds on s&w 442 da only. much more manageable trigger pull
Trigger upgrade
review-star review-star review-star review-star review-star
Parts were well packaged, video for removal/install great. Took 20 minutes!

Questions & Answers

18 Questions

0 0
Question:
Can I use just the hammer spring and the trigger return spring without using the firing pin and cylinder stop springs?
JoeW August 10, 2024 11:53 PM
0 0
Question:
Will this work with the sw shield plus?
David Dupre March 5, 2024 3:40 PM
0 0
Question:
Is this capable with a 638-3
mctoomer February 15, 2024 6:56 AM
0 0
Question:
Will this kit work on Taurus revolvers?
Gregory Hill November 11, 2023 12:00 PM
0 0
Question:
I have a mid-fifties Model 40. Will this kit work?
Richard Wood July 30, 2023 2:26 AM
0 0
Question:
How does this do with light primer strikes? I have a 442-2. I've tried the Wilson combat spring kit and the tk customs spring kit and only had liable ignition with federal/ soft primers. Can this kit atleast work with magnum pistol primers?
JimmyBallog June 8, 2023 5:43 PM
0 0
Question:
Will this work with model 15-4 .38 special Smith and Wesson?
AK64 May 30, 2023 9:33 PM
0 0
Question:
I'm asking a previous question that is unanswered. Is this the same kit that was on youtube that reduced the pull on a 642 from 10lbs to 6lbs?
Robert Partington March 12, 2023 9:25 PM
Answers
0 0
This is our updated kit for the J-frame. So it will be similar to the old video on YouTube. This is the newer kit, which will work on the 642
Answered by
Kenneth Noble / March 15, 2023 1:49 PM
0 0
Question:
Will this work with 637-2 .38 special+p Smith and Wesson
taylor green March 7, 2023 10:21 AM
Answers
0 0
Yes is compatible
Answered by
M*CARBO-Tech / March 7, 2023 12:52 PM
0 0
Question:
Will the kit work in a model 66?
Tom Bailey January 19, 2023 5:22 AM
Answers
0 0
It will not work with that particular model, the Model 66 is a K-Frame
Answered by
Timothy Parrish / January 24, 2023 2:16 PM
0 0
Question:
Is this the kit that you showed on YouTube to change the J frame from 10-pound pull to a 6-pound pull? I have a S&W 638. Thanks Kurt
KurtQVMWJPQH September 5, 2022 11:59 AM
0 0
Question:
"Won't work on rim fires" BUT will it FIT in any J frame? I want to take the chance; no returns; I want to try one in a S&W 351 PD to see if it will fit or work?
Quigly56 January 20, 2022 10:47 AM
Answers
0 0
We cannot advise that you install this spring kit in a rimfire model as the kit is not guaranteed through our safety testing.
Answered by
Abby Marino / April 13, 2022 9:44 AM
0 0
Question:
Will the J frame spring kit work in a S&W 686
January 11, 2022 7:59 PM
Answers
0 0
It wont work is a L-frame the 686
Answered by
Waldo@MCARBO / June 9, 2022 10:20 AM
0 0
Question:
Does this fit smith and Wesson bodyguard .38 special
JasonP87MH283 January 6, 2022 9:42 AM
Answers
0 0
Sorry, no it won't work with the bodyguard
Answered by
Waldo@MCARBO / June 9, 2022 10:18 AM
0 0
Question:
will this trigger spring kit work on a J-frame model 60 with a hammer
cdubleu January 1, 2022 8:28 PM
Answers
0 0
Yes this spring kit will work in all S&W J-frame models chambered in any centerfire caliber.
Answered by
Abby Marino / January 5, 2022 2:28 PM
0 0
Question:
Will this work with a J-Frame Model 60 .357 w/hammer?
cdubleu December 31, 2021 8:24 PM
Answers
0 0
Yes this spring kit will work in your Model 60 J-Frame chambered in .357.
Answered by
Abby Marino / January 5, 2022 1:47 PM
0 0
Question:
I want to reduce the trigger pull. Will this kit to do that?
K9wardog November 11, 2021 5:12 PM
0 0
Question:
will this trigger spring kit work on a 1980 J-frame model 36 with a hammer
June 9, 2021 11:22 PM
Answers
0 0
Yes this spring kit will work in a model 36 with a hammer.
Answered by
JakeFromMCARBO / July 15, 2021 9:10 AM

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