Mosin Nagant 91/30 Trigger Spring Kit

  • Custom Trigger Return Spring
  • Custom Sear Spring Shims (2 x .011)
  • Custom Trigger Shims (2 x .016)
  • Heavy Duty Firing Pin Spring
  • 550 Cord Gut (Installation Tool)
  • Synthetic Grease w/ PTFE
  • 1000 Grit Silicon Carbide Paper (3" x 3")

One of the Best Mosin Nagant Mods you can make to improve function and reliability; not to mention Reduce the Trigger Pull on your Mosin Nagant Trigger!

Most complete Mosin Nagant Trigger Job available by request from the M*CARBO Brotherhood! Fits and functions in all variations of the Mosin Nagant 91/30. Most complete Mosin Nagant Parts Kit to improve the function and reliability of your Mosin. More Mosin Nagant Accessories available upon request!

This is one of the more important Mosin Nagant Mods you can make to reduce light strikes and provide a cleaner, smoother trigger pull. The Original Mosin Nagant Trigger has a very heavy inconsistent trigger pull, but with the Mosin Nagant 91/30 Trigger Spring Kit, you can expect to reduce your trigger pull by 25% and improve the overall function of the Mosin Nagant Trigger Assembly.

Best Mosin Nagant Upgrades for the all around performance and reliability enhancement gained in the process. Make sure your Mosin Nagant Trigger is updated and reliable with the 21st Century Mosin Nagant Trigger Job!

Most of the internal parts on the Mosin Nagant were mass produced over 100 years ago with less than precise manufacturing methods. Use the Polishing Kit to remove machining marks and burrs on metal surfaces that interact with one another. While your at it, we highly recommend polishing the internal components with the M*CARBO Firearm Polishing Kit!

It's likely the crown could use some finishing on the muzzle of the barrel on your Mosin Nagant. Remove any burrs on the muzzle of the barrel of your Mosin Nagant with our Brass 45 degree Lapping Tool. We highly recommend lapping the crown of the muzzle on the Mosin with the Muzzle Lapping Kit!

Mosin Nagant 91/30 Owners Manual & Exploded View:

If you're doing a tune up on your Mosin Nagant with the Mosin Nagant M91/30 Trigger Spring Kit, then you might find the following Mosin Nagant M91/30 Resources useful in further enhancing your firearm. Download the Mosin Nagant M91/30 Owners Manual or use the Exploded View of the Mosin Nagant M91/30 Parts Diagram to plan your next firearm project. Print or Download the Mosin Nagant M91/30Trigger Spring Kit Instructions by M*CARBO.

M*CARBO No Hassle 100% Lifetime Guarantee:

The Mosin Nagant 91/30 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 will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 9" & 12"+).

Range Tested and Approved:

The Mosin Nagant 91/30 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 Mosin Nagant 91/30 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 Mosin Nagant 91/30 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 61 Reviews:

Very Satisfied

This is a much needed kit for these rifles, the installation was easy and straight forward. Thanks!

I installed the trigger spring, trigger shims, and shims for the sear. It works! While I don't have a trigger scale, the trigger is way easier to pull. I also polished the sear and cocking piece mating surfaces per the Youtube video. Well worth the money and effort!

Eugene, OR.

took time but worth it

My Installation took a bit longer than what I saw on the video. I think my trigger was a bit tighter than most from the beginning. this gave me the opportunity to stone out all the tooling marks on the side of the trigger to make it even smoother. Also when putting the Triger spring in it would slip under the sear spring so I put a bend in the spring to sit solidly in the middle of the sear. After polishing the sear points on the bolt and Triger assembly the trigger was much nicer and felt crisper than when i started. now i have to work on engagement of the sear points. right now there is a lot of engagement. I will tackle this problem later. it will take some time. so her are my pointers. You may need to bend the spring a little to get it to sit just right. once you have polished up the trigger washers if they still dont fit try stoning and polishing up the sides of the trigger. makes it smoother. If you do tackle engagement go slow and be patient as it will take time and over cutting means you will need a new trigger sear and have to start all over.

The product works great and does exactly what it says it does. It's also very easy to install.

Mosin Nagant Trigger Kit

The pull of my trigger is now very smooth and the trigger is not loose and sloppy like it was. I am very satisfied

Number of questions: 0