Need assistance? Call our experts: (727) 223-1816 or visit support.mcarbo.com

  • Labeled Mossberg 500 Trigger Spring Kit - Hammer Spring and Trigger Return Spring
  • Mossberg 500/835 Trigger Spring Kit and Maverick 88 Trigger Spring Kit
  • Packaged Mossberg 500/835 and Maverick 88 Trigger Spring Kit M*CARBO
product-image

Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit

review-star review-star review-star review-star review-star
(4.87) 422 reviews
Price: $19.95
in-stock-product Availability: IN STOCK

Retail: $24.95

You Save: $5.00(20.0%)


Quantity:
pledge
Product Information

About This Item

Description

Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit

  1. Custom Lighter Hammer Spring
  2. Custom Lighter Trigger Return Spring

The Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit will reduce your trigger pull by nearly 50% from a factory weight of 8.5lbs to a modified weight of 4.75lbs. One of the Best Mossberg 500 Accessories available! The Mossberg Pump Action Shotgun Trigger Job will reduce malfunctions and improve the accuracy and overall performance of your Mossberg Pump Action Shotgun. Simple drop in upgrade for your Mossberg 500 Trigger Assembly! 

*** We recommend using the Mossberg 500 / 835 Trigger Assembly Tool ***

The Mossberg 500 / 835 Trigger Spring Kit is constructed of the highest quality spring steel available, ASTM A228 music wire and are made right here in the USA! 

Be advised that Mossberg uses the same trigger assembly in a majority of their shotguns and for this reason the M*CARBO Trigger Spring Kit will fit a variety of Mossberg Shotgun Models. 

The Mossberg 500/835 Trigger Spring Kit will work for the following Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 835 Ulti-Mag, Don't forget it's a popular Maverick 88 Accessory.  This Trigger Spring Kit works for 12, 16, 20, 28 gauges.

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!

This spring kit will reduce your trigger pull by nearly 50% from a factory weight of 8.5lbs to a modified 4.75lb trigger pull. Installation takes approximately 20-30 minutes to install. Backed by our M*CARBO No Hassle 100% Lifetime Guarantee!

***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.***

                          

Q: Which Mossberg Shotguns will this kit work for?

A: The MCARBO Mossberg 500 / 835 Trigger Spring Kit will work for the following Mossberg Model Shotguns:500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag.

Q: Which gauges will the Mossberg 500 / 835 Trigger Spring Kit work for?

A: 12, 16, 20, 28 GAUGES Only

Q: Do you recommend removing the smaller inner hammer spring in the 590A1, when replacing the larger hammer spring with the MCARBO hammer spring?

A: 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.

Q: Should I be concerned with any malfunctions or light strikes after installing this kit?

A: No, all of our MCARBO Trigger Spring Kits have been professionally engineered, designed and manufactured to reduce trigger pull while maintaining 100% reliability of the firearm. You will not experience any sort of light strike or malfunction but you will experience a crisp smooth lighter trigger pull. Guaranteed or your Money Back!


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
This Mcarbo spring kit works great!
review-star review-star review-star review-star review-star
I have used these Mcarbo springs on the triggers of two Mossberg 500 and one Mossberg 835 shotguns. The results are always the same, it brings the trigger pull down just over 3 pounds from the factory trigger pull, and the gun functions fine! The springs are not difficult to replace either. Mcarbo has excellent how to videos.
Really nice trigger kit
review-star review-star review-star review-star review-star
This really made my Maverick 88's trigger pull so much smoother.
review-star review-star review-star review-star review-star
Spring upgrade is super easy to install. However my Mossberg 500 20ga only improved the trigger pull by alittle over a pound. Original pull was 6.5 pounds after the upgrade It reduced it to 5. So not much improvement but some is better than none.
review-star review-star review-star review-star review-star
Spring upgrade is super easy to install. However my Mossberg 500 20ga only improved the trigger pull by alittle over a pound. Original pull was 6.5 pounds after the upgrade It reduced it to 5. So not much improvement but some is better than none.
Ok
review-star review-star review-star review-star review-star
Worked, but not as well as I hoped for.
Install of Springs on an Maverick 88....
review-star review-star review-star review-star review-star
It went well although your video is mainly for the other Mossberg configurations....I was able to figure it out on my own....maybe you folks should do a video specifically for the Maverick 88 Trigger Group....
Maverick 88
review-star review-star review-star review-star review-star
Overall I am very happy with the new springs. My trigger pull went from an average of 6.6 to an average of 4.10. It took awhile to install the springs. The Maverick 88 is different then the 500. I had trouble with removing the disconnector. It's not the same as the 500. Also it was not easy to get back in place and the spring took some work to properly locate. The wooden tool did help with the hammer spring.
UPDATE: Uprated from 3 to 4 stars. Here's why!
review-star review-star review-star review-star review-star
My previous review (see below) related a less than expected improvement in reduced trigger pull on my Mossberg 590A1. A bit more finagling has netted the following observation and performance improvement. Unlike the 500/590, the 590A1 has TWO hammer springs; the normal spring as found on most 500-series gun, and another, smaller diameter spring nested inside the normal spring. This is apparently included on 590A1's to assure fire/function even with hard primers (apparently a military requirement). Removing the smaller diameter inner spring renders the hammer spring essentially the same as the other 500-series shotguns.

Upon removal of said smaller spring there was a substantially better trigger performance, with pulls between 4.25lb-4.5lb. My previous review indicated a post-installation trigger pull of 5.8lb-6.2lb. This substantially improved performance causes me to increase my rating to 4 stars and to state that I WOULD buy this upgrade again.

NOTES TO M*Carbo:

1) You fail to mention the inclusion of this factory 2nd spring in either your installation video or the PDF installation instructions, nor do you address whether to leave it or remove it. Leaving the smaller, nested spring in place will result in the trigger pull improvement being negligible. IF you remove it, then the performance improvement is significant. Inasmuch as removing the smaller spring renders the 590A1 trigger to be essentially the same pull as the 500-series, I have no concerns about functional reliability, but each individual needs to make their own choice. (I don't intend to be dragging this gun through the sea, landing on beaches, or clearing enemy trenches and am therefore not particularly concerned about meeting the more rigorous Marine/NAVY test criteria which necessitated the additional spring and subsequent higher trigger pull.)

BTW - It is noteworthy that I've yet to find any assembly artwork which shows two springs in this trigger assembly, even from Mossberg themselves.

2) I cannot find any facility for editing one's review once it's posted. Had there been one I would have changed the rating on my original post. Instead, I had to write this supplemental review, which is a less-than-desirable method. You might consider adding such a facility.
Questions & Answers
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

About This Item

Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit

  1. Custom Lighter Hammer Spring
  2. Custom Lighter Trigger Return Spring

The Mossberg 500 / 835 & Maverick 88 Trigger Spring Kit will reduce your trigger pull by nearly 50% from a factory weight of 8.5lbs to a modified weight of 4.75lbs. One of the Best Mossberg 500 Accessories available! The Mossberg Pump Action Shotgun Trigger Job will reduce malfunctions and improve the accuracy and overall performance of your Mossberg Pump Action Shotgun. Simple drop in upgrade for your Mossberg 500 Trigger Assembly! 

*** We recommend using the Mossberg 500 / 835 Trigger Assembly Tool ***

The Mossberg 500 / 835 Trigger Spring Kit is constructed of the highest quality spring steel available, ASTM A228 music wire and are made right here in the USA! 

Be advised that Mossberg uses the same trigger assembly in a majority of their shotguns and for this reason the M*CARBO Trigger Spring Kit will fit a variety of Mossberg Shotgun Models. 

The Mossberg 500/835 Trigger Spring Kit will work for the following Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 835 Ulti-Mag, Don't forget it's a popular Maverick 88 Accessory.  This Trigger Spring Kit works for 12, 16, 20, 28 gauges.

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!

This spring kit will reduce your trigger pull by nearly 50% from a factory weight of 8.5lbs to a modified 4.75lb trigger pull. Installation takes approximately 20-30 minutes to install. Backed by our M*CARBO No Hassle 100% Lifetime Guarantee!

***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.***

                          

Q: Which Mossberg Shotguns will this kit work for?

A: The MCARBO Mossberg 500 / 835 Trigger Spring Kit will work for the following Mossberg Model Shotguns:500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag.

Q: Which gauges will the Mossberg 500 / 835 Trigger Spring Kit work for?

A: 12, 16, 20, 28 GAUGES Only

Q: Do you recommend removing the smaller inner hammer spring in the 590A1, when replacing the larger hammer spring with the MCARBO hammer spring?

A: 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.

Q: Should I be concerned with any malfunctions or light strikes after installing this kit?

A: No, all of our MCARBO Trigger Spring Kits have been professionally engineered, designed and manufactured to reduce trigger pull while maintaining 100% reliability of the firearm. You will not experience any sort of light strike or malfunction but you will experience a crisp smooth lighter trigger pull. Guaranteed or your Money Back!


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 (422)
review-star review-star review-star review-star review-star
4.87
This Mcarbo spring kit works great!
review-star review-star review-star review-star review-star
I have used these Mcarbo springs on the triggers of two Mossberg 500 and one Mossberg 835 shotguns. The results are always the same, it brings the trigger pull down just over 3 pounds from the factory trigger pull, and the gun functions fine! The springs are not difficult to replace either. Mcarbo has excellent how to videos.
Really nice trigger kit
review-star review-star review-star review-star review-star
This really made my Maverick 88's trigger pull so much smoother.
review-star review-star review-star review-star review-star
Spring upgrade is super easy to install. However my Mossberg 500 20ga only improved the trigger pull by alittle over a pound. Original pull was 6.5 pounds after the upgrade It reduced it to 5. So not much improvement but some is better than none.
review-star review-star review-star review-star review-star
Spring upgrade is super easy to install. However my Mossberg 500 20ga only improved the trigger pull by alittle over a pound. Original pull was 6.5 pounds after the upgrade It reduced it to 5. So not much improvement but some is better than none.
Ok
review-star review-star review-star review-star review-star
Worked, but not as well as I hoped for.
Install of Springs on an Maverick 88....
review-star review-star review-star review-star review-star
It went well although your video is mainly for the other Mossberg configurations....I was able to figure it out on my own....maybe you folks should do a video specifically for the Maverick 88 Trigger Group....
Maverick 88
review-star review-star review-star review-star review-star
Overall I am very happy with the new springs. My trigger pull went from an average of 6.6 to an average of 4.10. It took awhile to install the springs. The Maverick 88 is different then the 500. I had trouble with removing the disconnector. It's not the same as the 500. Also it was not easy to get back in place and the spring took some work to properly locate. The wooden tool did help with the hammer spring.
UPDATE: Uprated from 3 to 4 stars. Here's why!
review-star review-star review-star review-star review-star
My previous review (see below) related a less than expected improvement in reduced trigger pull on my Mossberg 590A1. A bit more finagling has netted the following observation and performance improvement. Unlike the 500/590, the 590A1 has TWO hammer springs; the normal spring as found on most 500-series gun, and another, smaller diameter spring nested inside the normal spring. This is apparently included on 590A1's to assure fire/function even with hard primers (apparently a military requirement). Removing the smaller diameter inner spring renders the hammer spring essentially the same as the other 500-series shotguns.

Upon removal of said smaller spring there was a substantially better trigger performance, with pulls between 4.25lb-4.5lb. My previous review indicated a post-installation trigger pull of 5.8lb-6.2lb. This substantially improved performance causes me to increase my rating to 4 stars and to state that I WOULD buy this upgrade again.

NOTES TO M*Carbo:

1) You fail to mention the inclusion of this factory 2nd spring in either your installation video or the PDF installation instructions, nor do you address whether to leave it or remove it. Leaving the smaller, nested spring in place will result in the trigger pull improvement being negligible. IF you remove it, then the performance improvement is significant. Inasmuch as removing the smaller spring renders the 590A1 trigger to be essentially the same pull as the 500-series, I have no concerns about functional reliability, but each individual needs to make their own choice. (I don't intend to be dragging this gun through the sea, landing on beaches, or clearing enemy trenches and am therefore not particularly concerned about meeting the more rigorous Marine/NAVY test criteria which necessitated the additional spring and subsequent higher trigger pull.)

BTW - It is noteworthy that I've yet to find any assembly artwork which shows two springs in this trigger assembly, even from Mossberg themselves.

2) I cannot find any facility for editing one's review once it's posted. Had there been one I would have changed the rating on my original post. Instead, I had to write this supplemental review, which is a less-than-desirable method. You might consider adding such a facility.

Questions & Answers

5 Questions

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

Related Items: