Browning A-Bolt / A-Bolt II Trigger Spring Kit

Consists of a custom designed and manufactured Sear Spring

M*CARBO offers the Browning A Bolt Trigger Adjustment Solution for the A-Bolt and A-Bolt II which were produced from 1985 to 1998. Check age by serial number here.

Browning A Bolt Trigger Spring is manufactured from the highest quality American Spring Steel - ASTM A228 Music Wire to give you the Best Browning A Bolt Trigger Job!

Improve the Trigger for your Browning A Bolt in less than 30 minutes by watching our How to adjust trigger on a Browning A-Bolt Video. The Browning A Bolt Trigger Replacement Kit will improve your accuracy and tighten your shot groups.

Get the right solution for the Original Browning A Bolt and A Bolt II. Custom Browning A Bolt Trigger will get you solid results with minimal effort. No need to over pay for a Timney Trigger Browning A-Bolt product when you can get better results for less with the M*CARBO Browning A-Bolt Trigger Spring!

You deserve the finest Browning A Bolt Trigger Pull available! No need to bother with the Discontinued Moyer Trigger for Browning A-Bolt or Overpriced Timney Trigger Browning A Bolt.

If you have a Browning AB3 take a look at the Browning AB3 Trigger Spring Kit Here.

Current Browning Serial Number System


2G7=Gold Medallion
L17=Medallion Left Hand
2M7=Micro Medallion
7S7=Stainless Stalker
LS7=Stainless Stalker Left Hand
7C7=Composite Stalker

A-Bolt II

351=All A-Bolt II Centerfire Rifles

3G7=Gold Medallion
K17=Medallion Left-Hand
3M7=Micro Medallion
8S7=Stainless Stalker
KS7=Stainless Stalker Left-Hand
8C7=Composite Stalker

Browning A-Bolt / A-Bolt II Owners Manual

Browning A-Bolt / A-Bolt II Trigger Spring Kit Printable Instructions

M*CARBO No Hassle 100% Lifetime Guarantee:

The Browning A-Bolt/A-Bolt II Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

M*CARBO Lifetime Guarantee

Drop Tested and Approved:

Browning A-Bolt / A-Bolt II Trigger Spring Kit is an M*CARBO ASTM Spec Spring that will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 9" & 12"+).

Range Tested and Approved:

The Browning A-Bolt / A-Bolt II 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 Browning A-Bolt / A-Bolt II 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 Browning A-Bolt / A-Bolt II 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 97 Reviews:

X-Bolt trigger spring

I found a video, on YouTube, on the X-Bolt trigger. The video showed how to remover the factory trigger spring and replace it with the M-Carbo spring.
It was easy to do and I set the spring tension screw with two threads showing , just like in the video, and tested the pull weight and it was exactly 2lbs.
I am very happy with this product, it worked exactly like the video said it would!!!🤩🤩🤩

Browning A bolt Spring

Easy install by watching video. I actually had to use adjustment screw to add some weight back to trigger because it was really light. Anywhere from target to hunting weight. Very Nice!!


Browning a bolt 3 trigger spring

Great product! Only took a few minutes to install and change the trigger pull from 4.5 lbs doe to 2.5 lbs.

Great spring

One simple spring to install reduced trigger pull significantly install video much appreciated made it easy

Does exactly as advertised!

I recently purchased this kit and installed it in my Composite Stalker A-Bolt II. I was running about 3 lbs with the trigger fully adjusted as light as it would go. Installed the spring and it is now down to 1.2 lbs adjusted full heavy. I am going to have to do some shooting to get used to the light pull but as advertised, it will not go off dropping the rifle on the butt from a couple of feet off the floor. Best $12.95 I have ever spent on a rifle!

Number of questions: 0