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  • Labeled Mossberg 500 Trigger Spring Kit - Hammer Spring and Trigger Return Spring
  • Mossberg 500/835 Trigger Spring Kit and Maverick 88 Trigger Spring Kit
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Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit

review-star review-star review-star review-star review-star
(4.87) 446 reviews
Price: $19.95
in-stock-product Availability: IN STOCK

Retail: Retail: $24.95

You Save: $5.00 (20.0%)


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Product Information

About This Item

WHAT'S IN THE KIT:

  • 1 - Custom Lighter Hammer Spring
  • 1 - Custom Lighter Trigger Return Spring

Extra install assistance for Maverick 88 Owners Thanks to our friends at The Armorer's Shop!

Description

Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit

Experience an unmatched shooting upgrade with the Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit. This kit is expertly engineered to reduce your trigger pull from a factory weight of ~8.5lbs to a lighter ~4.75lbs (results may vary up to +/- 1lb), resulting in a nearly 50% trigger pull reduction.

This kit includes a Custom Hammer Spring & Trigger Return Spring, offering a simple drop-in upgrade for your Mossberg 500 Trigger Assembly. Witness a significant improvement in your accuracy and overall shotgun performance, making it one of the best Mossberg 500 accessories available.

Designed specifically for Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag, and Maverick 88
, this kit is made of the highest quality spring steel ASTM A228 Music Wire. The Mossberg Pump Action Shotgun Trigger Job will lessen malfunctions and enhance your Mossberg Pump Action Shotgun's accuracy and overall performance.

Though designed for specific models, Mossberg uses the same trigger assembly in a majority of their shotguns, making this M*CARBO Trigger Spring Kit suitable for a variety of Mossberg Shotgun Models. It's also a popular Maverick 88 accessory!

Installation takes approximately 20-30 minutes, and it's backed by our M*CARBO No Hassle 100% Lifetime Guarantee, giving you peace of mind with your purchase.

Check out this episode of TFBTV with James Reeves running a Mossberg Maverick 88 Torture Test with the M*CARBO Trigger Spring Kit Installed and Reviewed in Action with the Maverick!

*If you have a Mossberg 590, then you will need to remove both hammer springs that are in the Mossberg 590 Trigger Group from the Factory. There is an inner and outer hammer spring that fit inside one another. Then replace the 2 factory springs with the single M*CARBO Hammer Spring in this kit. We've thoroughly tested this to ensure it would be free from light strikes or discharges when dropped. Due to the Mossberg 590 being used by the Military, it includes 2 hammer springs from the factory to ensure it will ignite harder primers on military grade ammo. Unless you are shooting military grade ammo you will not experience any light strikes.

Mossberg 500/835 Resources:

Use the following Mossberg 500/835 Resources to further enhance your firearm. Download the Mossberg 500/835 Owners Manual or use the Exploded View of the Mossberg 500/835 Parts Diagram to plan your next firearm project.

Mossberg Shotguns 500/835 Owner's Manual
Mossberg 500/835 Exploded View
Mossberg 500/835 Trigger Group Exploded View

M*CARBO No Hassle 100% Lifetime Guarantee:

The Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

Tested and Approved:

The Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made Mossberg Shotguns 500 / 835 & Maverick 88 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 Mossberg Shotguns 500 / 835 & Maverick 88 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
True 2A supporters
review-star review-star review-star review-star review-star
I'm glad I found the brotherhood for well priced, American made, and quality parts for my guns. I'll for sure be a repeat customer and can't recommend them enough. If you're ever on the fence, just know they have a lifetime warranty and are veteran owned; go ahead and pull the trigger on your next purchase.
Great improvement-but not easy
review-star review-star review-star review-star review-star
I watched the video on installation and immediately ordered spring pack and installation dowl. Arrived promptly in good shape.
First off wooden tool was too big. May swell with weather. Anyway prongs broke off about 5 seconds into pushing spring. Don’t waste your money.
Moved on and easily removed spring/trigger. But if you release or breath wrong you will have it come apart. I’m not the only one. Dozens of folks all over trying to figure out how to get this damn thing back together. Found best info on reassembly on YouTube. After you get assembly back together you can stop cursing and doctor your fingers that were punctured by springs.
Once in gun there is a wonderful improvement in trigger feel. While I had mine apart I used jewelers polish on slide rails, trigger, other moving parts. Now I couldn’t ask for a smoother or more enjoyable trigger.
I recommend this terrific inexpensive kit but know what you’re getting into.

https://youtu.be/oAOjlBpRwB0?si=1Q3gmA-L2nmNGf2S
review image  
Impressive
review-star review-star review-star review-star review-star
I've had several Mossberg's and Mavericks over the years and they have all shot about the same as far as trigger pull. I never really complained because they were no options as far as trigger upgrades. Decided to build a new home defense gun and stumbled on this trigger spring upgrade. It's priced right and had good reviews. Installed in less than 30 minutes (with the tool) and the reduction in trigger pull is Impressive. Very noticeable. I'll have this in every shotgun I own from here on out.
review image  
Much improved
review-star review-star review-star review-star review-star
While I don't have a trigger pull gauge I can feel the improvement.
The only issue I had during the install was keeping the trigger return spring from shooting through the hammer spring hole when getting it into its final resting spot. The trigger assembly tool I received was a hair to large to fit all the way into the hammer spring hole to help prevent this from happening!
LIGHTEN UP TRIGGER ON MAVERICK
review-star review-star review-star review-star review-star
WORKED REAL GOOD , TRIGGER PULL WENT FROM 7.5 TO 4.5 . TRIGGER SMOOTHER AND BREAKS BETTER.
VIDEO A MUST SEE TO INSTALL SPRINGS.
Great results
review-star review-star review-star review-star review-star
I put a trigger kit in both of my Maverick 88's. Both had a noticeable change, they started just under 8lbs. Down to just over 4.3lbs and the other right at 4lbs. It took about 10 min for the first install and about 6 minutes for the second. The M-Carbo video made it very easy to do.
Great trigger upgrade for the Mossberg 500/590
review-star review-star review-star review-star review-star
I installed one of these trigger spring kits in my Mossberg 590 and dropped the trigger pull from 5lbs 6oz to 4lbs 4oz. Excellent MCARBO walkthrough video as always. Great upgrade for an affordable price. Thanks MCARBO!
Amazing product. Trigger pull is super smooth
review-star review-star review-star review-star review-star
I installed these springs about 3 weeks ago and the trigger pull is so much smoother and lighter now. I've put about 200 rounds of birdshot and 45 3"slug rounds through it and no malfunctions or problems at all. Makes the gun much more accurate.
Questions & Answers
0 0
Question:
Will this work for the Mossberg SA-20 model also?
Chase91 February 9, 2024 10:32 PM
0 0
Question:
Do you ship to the UK and do I need to buy any special tools to fit the new springs?
Majorjim August 3, 2023 6:55 PM
0 0
Question:
Do you recommend removing the smaller inner hammer spring in the 590A1, when replacing the larger hammer spring with the MCARBO hammer spring?
July 20, 2023 1:58 PM
Answers
Yes we recommend removing both the smaller and larger hammer spring and replacing it with the M*CARBO hammer spring to get the lightest trigger pull possible.
Answered by
M*CARBO-Tech / July 20, 2023 1:59 PM
0 0
Question:
It lists the 590 & 590M as being compatible with. Is there any reason it would not work on a 590a1?
Omnivorous April 18, 2023 4:34 AM
0 0
Question:
Will this trigger kit work for a Mossberg 535?
gphiliph March 24, 2023 6:45 PM
Answers
Yes. This kit will work in a 535 ATS.
Answered by
stevenk@mcarbo.com24442 / March 28, 2023 9:51 AM
0 0
Question:
About how long should the hammer spring last? I put the kit in my mossberg 500 and maverick 88 about 5 or 6 years ago and I starting to get lite taps in both guns. Do they need to be replaced now?
March 6, 2023 9:28 AM
Answers
We have a Life expectancy of one million compressions, but all our products are lifetime warranties. You can contact our customer service department, and they can replace your springs.
Answered by
M*CARBO-Tech / March 7, 2023 8:34 AM
0 0
Question:
Is it normal for the trigger to be more rattlely after install? The noise is in the pretravel, cocked, and uncocked. Thx
bbmcb December 21, 2022 5:22 PM
Answers
Thanks for reaching out! It sounds like there might be something else going on. Can you please shoot us an email at help@mcarbo.com with your details? We'll have one of our support team take a look at this for you!
Answered by
Abby Marino / December 30, 2022 1:44 PM
0 0
Question:
Will this work with a Mossberg Shockwave 20 gauge?
November 22, 2022 12:56 PM
0 0
Question:
Does the hammer spring sacrifice hammer striking power in order to get better trigger pull? , Thank you
May 27, 2022 10:55 AM
Answers
By Default, putting in a litter spring is going to have a liter strike. That being said our engineers designed it to still be strong enough to ignite the primer on a variety of brands.
Answered by
Kenneth Noble / June 7, 2022 7:44 AM
0 0
Question:
Will this work on a 90s model 500?
Davesim074 April 19, 2022 10:23 PM
Answers
Absolutely! This kit will work in all Mossberg 500 models
Answered by
Abby Marino / April 20, 2022 8:54 AM
0 0
Question:
Does it fit a 20 ga 500 ?
December 27, 2021 8:37 AM
Answers
We haven't tested it in a 20 ga here ourselves but have had feedback from other customers that they have received good results!
Answered by
Abby Marino / April 20, 2022 8:57 AM
0 0
Question:
Will the trigger spring kit for Mossberg %00 shotguns work on a 590A1?
LTalbot December 14, 2021 1:36 PM
Answers
Yes the kit will work
Answered by
waldo@mcarbo.com37647 / December 20, 2021 11:31 AM
0 0
Question:
Is this also compatable with the Mossberg 590 series pump shotguns???
check6otis December 1, 2021 8:39 AM
Answers
Designed for Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag, Maverick 88
Answered by
waldo@mcarbo.com37647 / December 20, 2021 11:58 AM
0 0
Question:
Will this kit only work on the 12 guage 88/500/590/Shockwave? Will there be kits for the 20 and .410 guage?
Gregg1LE November 26, 2021 5:16 PM

About This Item

WHAT'S IN THE KIT:

  • 1 - Custom Lighter Hammer Spring
  • 1 - Custom Lighter Trigger Return Spring

Extra install assistance for Maverick 88 Owners Thanks to our friends at The Armorer's Shop!

Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit

Experience an unmatched shooting upgrade with the Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit. This kit is expertly engineered to reduce your trigger pull from a factory weight of ~8.5lbs to a lighter ~4.75lbs (results may vary up to +/- 1lb), resulting in a nearly 50% trigger pull reduction.

This kit includes a Custom Hammer Spring & Trigger Return Spring, offering a simple drop-in upgrade for your Mossberg 500 Trigger Assembly. Witness a significant improvement in your accuracy and overall shotgun performance, making it one of the best Mossberg 500 accessories available.

Designed specifically for Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag, and Maverick 88
, this kit is made of the highest quality spring steel ASTM A228 Music Wire. The Mossberg Pump Action Shotgun Trigger Job will lessen malfunctions and enhance your Mossberg Pump Action Shotgun's accuracy and overall performance.

Though designed for specific models, Mossberg uses the same trigger assembly in a majority of their shotguns, making this M*CARBO Trigger Spring Kit suitable for a variety of Mossberg Shotgun Models. It's also a popular Maverick 88 accessory!

Installation takes approximately 20-30 minutes, and it's backed by our M*CARBO No Hassle 100% Lifetime Guarantee, giving you peace of mind with your purchase.

Check out this episode of TFBTV with James Reeves running a Mossberg Maverick 88 Torture Test with the M*CARBO Trigger Spring Kit Installed and Reviewed in Action with the Maverick!

*If you have a Mossberg 590, then you will need to remove both hammer springs that are in the Mossberg 590 Trigger Group from the Factory. There is an inner and outer hammer spring that fit inside one another. Then replace the 2 factory springs with the single M*CARBO Hammer Spring in this kit. We've thoroughly tested this to ensure it would be free from light strikes or discharges when dropped. Due to the Mossberg 590 being used by the Military, it includes 2 hammer springs from the factory to ensure it will ignite harder primers on military grade ammo. Unless you are shooting military grade ammo you will not experience any light strikes.

Mossberg 500/835 Resources:

Use the following Mossberg 500/835 Resources to further enhance your firearm. Download the Mossberg 500/835 Owners Manual or use the Exploded View of the Mossberg 500/835 Parts Diagram to plan your next firearm project.

Mossberg Shotguns 500/835 Owner's Manual
Mossberg 500/835 Exploded View
Mossberg 500/835 Trigger Group Exploded View

M*CARBO No Hassle 100% Lifetime Guarantee:

The Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

Tested and Approved:

The Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made Mossberg Shotguns 500 / 835 & Maverick 88 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 Mossberg Shotguns 500 / 835 & Maverick 88 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 (446)
review-star review-star review-star review-star review-star
4.87
True 2A supporters
review-star review-star review-star review-star review-star
I'm glad I found the brotherhood for well priced, American made, and quality parts for my guns. I'll for sure be a repeat customer and can't recommend them enough. If you're ever on the fence, just know they have a lifetime warranty and are veteran owned; go ahead and pull the trigger on your next purchase.
Great improvement-but not easy
review-star review-star review-star review-star review-star
I watched the video on installation and immediately ordered spring pack and installation dowl. Arrived promptly in good shape.
First off wooden tool was too big. May swell with weather. Anyway prongs broke off about 5 seconds into pushing spring. Don’t waste your money.
Moved on and easily removed spring/trigger. But if you release or breath wrong you will have it come apart. I’m not the only one. Dozens of folks all over trying to figure out how to get this damn thing back together. Found best info on reassembly on YouTube. After you get assembly back together you can stop cursing and doctor your fingers that were punctured by springs.
Once in gun there is a wonderful improvement in trigger feel. While I had mine apart I used jewelers polish on slide rails, trigger, other moving parts. Now I couldn’t ask for a smoother or more enjoyable trigger.
I recommend this terrific inexpensive kit but know what you’re getting into.

https://youtu.be/oAOjlBpRwB0?si=1Q3gmA-L2nmNGf2S
review image  
Impressive
review-star review-star review-star review-star review-star
I've had several Mossberg's and Mavericks over the years and they have all shot about the same as far as trigger pull. I never really complained because they were no options as far as trigger upgrades. Decided to build a new home defense gun and stumbled on this trigger spring upgrade. It's priced right and had good reviews. Installed in less than 30 minutes (with the tool) and the reduction in trigger pull is Impressive. Very noticeable. I'll have this in every shotgun I own from here on out.
review image  
Much improved
review-star review-star review-star review-star review-star
While I don't have a trigger pull gauge I can feel the improvement.
The only issue I had during the install was keeping the trigger return spring from shooting through the hammer spring hole when getting it into its final resting spot. The trigger assembly tool I received was a hair to large to fit all the way into the hammer spring hole to help prevent this from happening!
LIGHTEN UP TRIGGER ON MAVERICK
review-star review-star review-star review-star review-star
WORKED REAL GOOD , TRIGGER PULL WENT FROM 7.5 TO 4.5 . TRIGGER SMOOTHER AND BREAKS BETTER.
VIDEO A MUST SEE TO INSTALL SPRINGS.
Great results
review-star review-star review-star review-star review-star
I put a trigger kit in both of my Maverick 88's. Both had a noticeable change, they started just under 8lbs. Down to just over 4.3lbs and the other right at 4lbs. It took about 10 min for the first install and about 6 minutes for the second. The M-Carbo video made it very easy to do.
Great trigger upgrade for the Mossberg 500/590
review-star review-star review-star review-star review-star
I installed one of these trigger spring kits in my Mossberg 590 and dropped the trigger pull from 5lbs 6oz to 4lbs 4oz. Excellent MCARBO walkthrough video as always. Great upgrade for an affordable price. Thanks MCARBO!
Amazing product. Trigger pull is super smooth
review-star review-star review-star review-star review-star
I installed these springs about 3 weeks ago and the trigger pull is so much smoother and lighter now. I've put about 200 rounds of birdshot and 45 3"slug rounds through it and no malfunctions or problems at all. Makes the gun much more accurate.

Questions & Answers

14 Questions

0 0
Question:
Will this work for the Mossberg SA-20 model also?
Chase91 February 9, 2024 10:32 PM
0 0
Question:
Do you ship to the UK and do I need to buy any special tools to fit the new springs?
Majorjim August 3, 2023 6:55 PM
0 0
Question:
Do you recommend removing the smaller inner hammer spring in the 590A1, when replacing the larger hammer spring with the MCARBO hammer spring?
July 20, 2023 1:58 PM
Answers
0 0
Yes we recommend removing both the smaller and larger hammer spring and replacing it with the M*CARBO hammer spring to get the lightest trigger pull possible.
Answered by
M*CARBO-Tech / July 20, 2023 1:59 PM
0 0
Question:
It lists the 590 & 590M as being compatible with. Is there any reason it would not work on a 590a1?
Omnivorous April 18, 2023 4:34 AM
0 0
Question:
Will this trigger kit work for a Mossberg 535?
gphiliph March 24, 2023 6:45 PM
Answers
0 0
Yes. This kit will work in a 535 ATS.
Answered by
stevenk@mcarbo.com24442 / March 28, 2023 9:51 AM
0 0
Question:
About how long should the hammer spring last? I put the kit in my mossberg 500 and maverick 88 about 5 or 6 years ago and I starting to get lite taps in both guns. Do they need to be replaced now?
March 6, 2023 9:28 AM
Answers
0 0
We have a Life expectancy of one million compressions, but all our products are lifetime warranties. You can contact our customer service department, and they can replace your springs.
Answered by
M*CARBO-Tech / March 7, 2023 8:34 AM
0 0
Question:
Is it normal for the trigger to be more rattlely after install? The noise is in the pretravel, cocked, and uncocked. Thx
bbmcb December 21, 2022 5:22 PM
Answers
0 0
Thanks for reaching out! It sounds like there might be something else going on. Can you please shoot us an email at help@mcarbo.com with your details? We'll have one of our support team take a look at this for you!
Answered by
Abby Marino / December 30, 2022 1:44 PM
0 0
Question:
Will this work with a Mossberg Shockwave 20 gauge?
November 22, 2022 12:56 PM
0 0
Question:
Does the hammer spring sacrifice hammer striking power in order to get better trigger pull? , Thank you
May 27, 2022 10:55 AM
Answers
0 0
By Default, putting in a litter spring is going to have a liter strike. That being said our engineers designed it to still be strong enough to ignite the primer on a variety of brands.
Answered by
Kenneth Noble / June 7, 2022 7:44 AM
0 0
Question:
Will this work on a 90s model 500?
Davesim074 April 19, 2022 10:23 PM
Answers
0 0
Absolutely! This kit will work in all Mossberg 500 models
Answered by
Abby Marino / April 20, 2022 8:54 AM
0 0
Question:
Does it fit a 20 ga 500 ?
December 27, 2021 8:37 AM
Answers
0 0
We haven't tested it in a 20 ga here ourselves but have had feedback from other customers that they have received good results!
Answered by
Abby Marino / April 20, 2022 8:57 AM
0 0
Question:
Will the trigger spring kit for Mossberg %00 shotguns work on a 590A1?
LTalbot December 14, 2021 1:36 PM
Answers
0 0
Yes the kit will work
Answered by
waldo@mcarbo.com37647 / December 20, 2021 11:31 AM
0 0
Question:
Is this also compatable with the Mossberg 590 series pump shotguns???
check6otis December 1, 2021 8:39 AM
Answers
0 0
Designed for Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag, Maverick 88
Answered by
waldo@mcarbo.com37647 / December 20, 2021 11:58 AM
0 0
Question:
Will this kit only work on the 12 guage 88/500/590/Shockwave? Will there be kits for the 20 and .410 guage?
Gregg1LE November 26, 2021 5:16 PM

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