• Reduce your trigger pull from a stock 4.75lbs to a modified 1.5 - 2.5lbs (Average results can vary up to +/- 1lb)
  • Improve accuracy and overall rifle performance
  • Nearly 60% Trigger Pull Reduction!
  • T/C Compass Trigger Job Kit includes a Custom Main Trigger Return Spring, Secondary Trigger Return Spring & Sear Spring
  • Highest Quality American Spring Steel ASTM A228 Music Wire & 302 Stainless Steel Spring Wire
  • Protected by the M*CARBO 100% Lifetime Guarantee
  • Made in the USA!
  • Fast Same Day Shipping!

Thompson Center Compass Trigger Spring Kit

Consists of 4 custom designed and manufactured springs:

  • 1.5lb Main Trigger Return Spring 
  • 2.5lb Main Trigger Return Spring 
  • Secondary Trigger Return Spring
  • Sear Spring
Thompson Center Compass Trigger Spring Kit Parts

** Kit includes 2 Main Trigger Return Spring Options that will offer different levels of trigger pull reduction and drop test ratings:

  • 1.5lb Main Trigger Return Spring - Benchrest Shooting Only - Main Spring will offer the most trigger pull reduction with a limited drop test rating (3", 6" and 9" only).
  • 2.5lb Main Trigger Return Spring - Hunting Use - Main Spring will offer a perfect trigger pull reduction with an unlimited drop test rating (3", 6", 12"+).

The Best way to reduce your T/C Compass trigger pull from a stock 4.5lbs to a modified 2.5 lbs. The Thompson Center Compass Trigger Spring Kit includes a series of custom springs designed to give a more controlled trigger pull reduction with the lighter replacement T/C Compass Main Trigger Return Spring, T/C Compass Secondary Trigger Return Spring and T/C Compass Sear Spring. The T/C Compass Trigger Spring Kit is designed to work without the adjustment nuts since the trigger pull we be at the lightest setting.

The Thompson Center Compass Rifle has a very heavy factory trigger pull that can't be lowered much more than 4lbs. Now with the New T/C Compass Trigger Spring Kit we can make some major improvements over the factory Thompson Center Compass Trigger. 

This is a much better way to get the most performance out of your T/C Compass Rifle for a fraction of the cost of a drop in trigger. All M*CARBO Custom Thompson Center Compass Rifle Gun Parts are made in America and come with a 100% Lifetime Guarantee.

One of the Best Thompson Center Compass Accessories for improving the T/C Compass Accuracy and Reliability. The Thompson Center Compass Trigger Upgrade Kit is by far the best and most affordable Thompson Center Compass Trigger Adjustment available to reduce the trigger pull and reduce overtravel. Just read the Thompson Center Compass Reviews and you will hear the most common complaint is the heavy factory trigger. You deserve a Match like trigger for your Thompson/Center Compass Rifle!

Thompson Center Compass Owners Manual:

If you're getting the Thompson Center Compass Trigger Spring Kit, then you might find the following T/C Compass Resources useful in further enhancing your firearm. Download the T/C Compass Owner's Manual.

M*CARBO No Hassle 100% Lifetime Guarantee:

The Thompson Center Compass Trigger Spring Kit is protected by the M*CARBO No Hassle 100% 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 Thompson Center Compass 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 Thompson Center Compass 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 Thompson Center Compass 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.

Q: What would you say is gained by replacing the secondary spring and the sear spring versus merely replacing the main trigger return spring?

A: The T/C Compass Trigger Spring Kit is designed to work without the adjustment nuts since the trigger pull we be at the lightest setting. We are also including 2 main trigger return spring options that will allow target shooting or hunting rifle setups. It's an overall combined trigger pull reduction. Making it a safer and better feeling trigger pull reduction.

Q: I have heard various people say that they practiced a drop test after using the other aftermarket spring, but it is hard to make sense of what exactly a "safe" drop height for a rifle in the "Fire" position is. Do you have any thoughts on this? How different would a TC Compass with your trigger kit respond to a drop test than any other common rifle with a good trigger?

A: Our drop test is from 6" on hard concrete and then from 12" onto a rubber mat. Testing the trigger each time to make sure it didn't fire.

Q: Is there anything fundamentally trickier about the TC Compass/Winchester Model 70 trigger than any other trigger as far as safety and trigger pull harmony goes?

A: TC made a voluntary recall on their rifles to fix the trigger. They received too many complaints that it would not pass a minimal drop test. In an effort to fix what they already had they added the counterweight and another trigger return spring.
Overall Customer Rating of 499 Reviews:
North Carolina

big help

I ordered this trigger spring kit and it arrived remarkably quick. Followed directions from instruction video and had them installed within a few minutes. The improved trigger makes bench rest shooting and hunting much better. I recommend this to anyone wanting a better trigger on a TC Compass.

High Plains

TC Compass trigger job

Received the springs in about a week.
Install would have been better had i not had 5 cups of coffee first.
Re Assembly was best, after coffee wore off, and re watched the video
a few times.
Adjusted trigger, smooth operation.
Range time tomorrow!
I am a returning customer.

Thompson?Center Compass

I received the order within a few days.
I took the trigger assembly on my .308 apart as per the excellent video. When putting it back together, I had horror stories running thru my head about losing the small trigger return spring on the basement floor. I struggled a bit getting the second pin in due to the holes not lining up, but I did get it.
I started with a spring pressure of 5-3/4 to 6-1/2 pounds and ended with 3-1/2 to 4 pounds pressure using the 2-1/2 pound supplied spring. In hindsight, I would have tried both springs before applying the blue LocTite and checking the pressure to see what the results were. I just ordered another set for my .223.

Great service, fast shipping. Installed on 2 rifles. Ended up installing the 1.5 lb springs following the vidio instructions, this gave me 2.5 to 3 lb trigger pull.


fast shipping, easy install after watching step by step video. did exactly advertised.

Number of questions: 0