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.
Tested and Approved:
The Mossberg Shotguns 500 / 835 & Maverick 88 Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.
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.
8lb trigger
Went from 8 lbs to under 4 lbs great products
Easy as 1-2-3!
Offered the Mossberg 500 trigger kit and the installation tool. I also ordered the 3D printed gunsmith bench block since I was on the lookout for one anyway.
The transfer kit was super easy to install. Just followed along with the video! Trigger pull is notification lighter. Thanks M-CARBO Team!
Did what it said it would.
Actually arrived quickly. Fairly easy installation. The tool was a help. Definitely decreased trigger pull weight. I don't have a gauge,but you can tell.
Mossberg 500 bantam
I ordered this kit and installed it very easily. I suggest you do what they say and get the installation tool. I put it in a mossberg 500 bantam turkey 20ga. It literally feels the same as the factory trigger pull. Save your money, not worth it in my opinion.
As Advertised
Appears to be as advertised! Haven’t had the chance to put it through its paces yet but there is a noticeable change in trigger squeeze pressure required to engage the trigger. Time will tell how it holds up but I don’t foresee there being any issues. I was also very pleased with the ordering and shipping process. I think I received the kit within 2-3 days after placing the order. I would definitely recommend.
M Carbo Mossberg 500 Trigger Kit
I ordered 2 sets of the Mossberg 500 trigger spring kits and received only 1 set. I emailed M Carbo right away with a picture showing my receipt plus the items I did get. Have not heard back. Basically paid double for 1 kit. Horrible customer service. Will take my business else where.
OK results
I have a Lymann trigger pull gauge... measured 7 lb. - 6 pull average before install. After install, 6 pull average was 5 lb. 1 0z. so approximately 27% decrease. It was noticeably better, but I was hoping for 50 % decrease. These Factory Mossberg triggers are HORRIBLE, so Im not faulting MCARBO for my results... there's only so much one can do... "You can't polish a turd!"
Cheap and easy...
The trigger on my Maverick was not it's best attribute, and this spring looked like a simple upgrade. I watched the install video a few times while the kit was in transit and felt I had a good handle on it. All in, it took about 15 minutes to install and I am pleased with the results. My factory trigger pull was roughly 6-6.5 lbs, after the installation I am now seeing a 3.25- 3.75 lb pull.
Will this kit work in a Mossberg 510 mini? Thanks
Will this work for the Mossberg SA-20 model also?
Do you ship to the UK and do I need to buy any special tools to fit the new springs?
Do you recommend removing the smaller inner hammer spring in the 590A1, when replacing the larger hammer spring with the MCARBO hammer spring?
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.
It lists the 590 & 590M as being compatible with. Is there any reason it would not work on a 590a1?
Will this trigger kit work for a Mossberg 535?
Yes. This kit will work in a 535 ATS.
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?
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.
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
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!
Will this work with a Mossberg Shockwave 20 gauge?
November 22, 2022 12:56 PM
Does the hammer spring sacrifice hammer striking power in order to get better trigger pull? , Thank you
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.
Will this work on a 90s model 500?
Absolutely! This kit will work in all Mossberg 500 models
Does it fit a 20 ga 500 ?
December 27, 2021 8:37 AM
We haven't tested it in a 20 ga here ourselves but have had feedback from other customers that they have received good results!
Will the trigger spring kit for Mossberg %00 shotguns work on a 590A1?
Is this also compatable with the Mossberg 590 series pump shotguns???
Designed for Mossberg Model Shotguns: 500, 505, 535 ATS, 590, 590M, 835 Ulti-Mag, Maverick 88
Will this kit only work on the 12 guage 88/500/590/Shockwave? Will there be kits for the 20 and .410 guage?