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  • Sig Sauer P320 Trigger Spring Kit by M*CARBO
  • Lighter Striker Spring for Sig Sauer P320
  • Lighter Sear Springs for Sig Sauer P320
  • Sig Sauer P320 Upgraded Striker Spring and Sear Springs
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Sig Sauer P320 Trigger Spring Kit

review-star review-star review-star review-star review-star
(5.00) 12 reviews
Price: $19.95
in-stock-product Availability: IN STOCK

Retail: Retail: $26.95

You Save: $7.00 (26.0%)


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Product Information

About This Item

WHAT'S INCLUDED:

  • 2 - Custom Lighter Sear Springs
  • 1 - Custom Lighter Striker Spring

If you have a P320 with a Manual Safety, please skip to 14:58 in the video for disassembly instructions.

Description

Sig Sauer P320 Trigger Spring Kit

Maximize your pistol's performance with our Sig Sauer P320 Trigger Spring Kit. Designed to reduce your stock trigger pull from ~6.5lbs to a modified ~4lbs, this kit provides a significant 25-30% reduction in trigger pull weight (This improvement varies depending on your P320 model and can provide an average of +/- 1lb difference)

Unlike other aftermarket options, our Sig P320 Spring Kit is uniquely engineered with a custom striker spring. This feature reduces the trigger pull weight while maintaining a crisp, positive trigger reset. There's no need to worry about a lighter trigger return spring affecting your reset.

Our P320 Kit is compatible with all Sig Sauer P320 models and is specially designed to improve your pistol's accuracy and overall performance. Pair it with our Sig Sauer P320 Short Stroke Flat Trigger to experience the shortest length of trigger travel compared to OEM and all aftermarket options!

Inside the kit, you'll find two custom lighter sear springs and one custom lighter striker spring – the perfect components to accomplish a superior Sig Sauer P320 trigger job. Also suitable as Sig Sauer P320 Spectre Comp Accessories and P320 XCompact upgrades, this kit ensures high-performance results across models.

Install our kit to resolve any factory Sig Sauer P320 problems with the trigger pull, and make your P320 competition-ready.

Sig Sauer P320 Resources:

If you're getting the Sig Sauer P320 Trigger Spring Kit, then you might find the following Sig Sauer P320 Resources useful in further enhancing your firearm. Download the Sig Sauer P320 Owners Manual or use the Sig Sauer P320 Exploded View as a Parts Diagram to plan your next firearm project.

Sig Sauer P320 Owner's Manual
Sig Sauer P320 Exploded View

M*CARBO No Hassle 100% Lifetime Guarantee:

The Sig Sauer P320 Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

Drop Tested and Approved:

Sig Sauer P320 Trigger Spring Kit is drop Tested according to SAAMI Standard Z299.5 rating (12" & 48").

Tested and Approved:

The Sig Sauer P320 Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made Sig Sauer P320 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 Sig Sauer P320 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
My .45 is more responsive!
review-star review-star review-star review-star review-star
Springs went in easy and the result is a far superior shooting experience and faster re-acquisition. Nice work guys!
Great Spring Kit
review-star review-star review-star review-star review-star
These springs are a huge improvement over the factory OEM sig springs.
Pair this with the MCarbo 320 flat trigger and you're in business.

Highly recommend these springs.
Works Great
review-star review-star review-star review-star review-star
Nothing wrong with this kit, it works very well, but try the SS Flat Trigger Upgrade from M-Carbo first. It may be good enough by itself. Both are excellent products.
Worked as advertised
review-star review-star review-star review-star review-star
Installed this kit in my P320 V-Tac with the Sig straight trigger. The trigger pull averaged 4.5 lbs before and 3.2 lbs after using the Lyman trigger pull gauge. The video was invaluable. Followed the steps on my phone as I was installing the springs. Overall I am very happy with the results.
As advertised 1 pound less trigger pull.
review-star review-star review-star review-star review-star
I have a trigger gauge with a thin pull bar so it rides best at the tip of the sig flat trigger so number are lower than where your finger would ride but 3.4 - 3.8 LB before springs installed and 2.2 - 2.6 after. It is a consistent and accurate gauge just not pulling as same spot as finger would. Picture of p320 shows curve at tip of trigger where the gauge rides
review image  
easy upgrade
review-star review-star review-star review-star review-star
This is a well executed upgrade. Easy to install, good instructional video, terrific value.
I put this kit in an X5 Legion and a AXG Pro and it made for a very smooth break. I didn't measure the pull weight before and after, but it feels better in both guns without being scary light.
Spring kit
review-star review-star review-star review-star review-star
I installed the spring kit in my 320 compact . stock curved trigger. the kit brought the trigger weight down to about 5lbs. tested with NRA trigger weight set. it did help my shooting, better grouping. I'll change out my other 320's
A very good product
review-star review-star review-star review-star review-star
My P320 originally had a trigger pull of 6 pounds 7 oz. with all stock parts. I installed an Apex Forward Set Trigger kit and that reduced the trigger pull to 5 pounds 3 oz. I wanted it still lighter, and this kit reduced the pull to 3 pounds 4 oz. I am very satisfied. I still need to test the gun to ensure that the lighter striker spring does not cause any misfires.
Questions & Answers
0 0
Question:
Will this fit the M17?
Dmann90 January 25, 2024 2:02 PM
0 0
Question:
The M*Carbo Flat Adjustable Trigger is a very nice improvement for my Sig P320 Spectre Comp Blackout. I would now like to lighten the trigger pull from where it is now (above 6.5 pounds) to about 4.5 to 5 pounds. I am not sure that I am comfortable with a 4 pound or less trigger on a striker gun with no manual safety. Could I achieve an intermediate trigger weight by using only the lighter sear springs in your trigger spring package (and not using the striker spring)? It seems to me that this would have the added benefit of mitigating concerns about the risk of "light strikes" when using a lighter striker spring.
August 31, 2023 3:59 PM
Answers
Yes, any combination with OEM springs will work with this spring kit.
Answered by
M*CARBO-Tech / October 30, 2023 2:38 PM
0 0
Question:
Will this fit the p320 x 10mm?
Ram2QM7WX1Z August 30, 2023 4:08 PM
Answers
Yes
Answered by
M*CARBO-Tech / October 30, 2023 2:42 PM
0 0
Question:
Will the reduced striker spring cause light strikes, or have you guys tested it with different ammo?
S&W DoubleTapper August 4, 2023 9:36 AM
0 0
Question:
Does this fit the P320XTen 10 mm ? Does the trigger fit as well ?
Jay Epstein July 7, 2023 1:14 PM
Answers
yes, for the spring kit but the trigger has not been tested with the XTen, but they have the same "footprint" as the X-series flat triggers as Sig.
Answered by
M*CARBO-Tech / October 30, 2023 2:43 PM
0 0
Question:
Will this spring kit actually help a SIG P320 Legion X5 model? Currently trigger pull is just under 4 lbs. In addition this P320 model comes with a flat trigger. Would your flat trigger be of any advantage to this particular SIG model, the Legfion X5?
March 12, 2023 2:16 PM
Answers
If your firearm is already under 4# then you may not see a difference with our spring kit. It may bring it down even further, or it may only come down an ounce or two. Our flat trigger is adjustable, so you can set the pre travel and over travel.
Answered by
kenneth@mcarbo.com57283 / March 15, 2023 9:23 AM
0 0
Question:
I know the description says this spring kit fits ALL P320 models. Does it improve the X5 Legion trigger as well? Their product description mentions the skeletonized trigger but no mention of springs.
February 10, 2023 11:25 PM
Answers
The kit will fit and function in the X5 Legion. The trigger itself reduces the pull weight on the X5. Our springs will further reduce the weight by 20%-30%.
Answered by
stevenk@mcarbo.com24442 / February 13, 2023 7:42 AM

About This Item

WHAT'S INCLUDED:

  • 2 - Custom Lighter Sear Springs
  • 1 - Custom Lighter Striker Spring

If you have a P320 with a Manual Safety, please skip to 14:58 in the video for disassembly instructions.

Sig Sauer P320 Trigger Spring Kit

Maximize your pistol's performance with our Sig Sauer P320 Trigger Spring Kit. Designed to reduce your stock trigger pull from ~6.5lbs to a modified ~4lbs, this kit provides a significant 25-30% reduction in trigger pull weight (This improvement varies depending on your P320 model and can provide an average of +/- 1lb difference)

Unlike other aftermarket options, our Sig P320 Spring Kit is uniquely engineered with a custom striker spring. This feature reduces the trigger pull weight while maintaining a crisp, positive trigger reset. There's no need to worry about a lighter trigger return spring affecting your reset.

Our P320 Kit is compatible with all Sig Sauer P320 models and is specially designed to improve your pistol's accuracy and overall performance. Pair it with our Sig Sauer P320 Short Stroke Flat Trigger to experience the shortest length of trigger travel compared to OEM and all aftermarket options!

Inside the kit, you'll find two custom lighter sear springs and one custom lighter striker spring – the perfect components to accomplish a superior Sig Sauer P320 trigger job. Also suitable as Sig Sauer P320 Spectre Comp Accessories and P320 XCompact upgrades, this kit ensures high-performance results across models.

Install our kit to resolve any factory Sig Sauer P320 problems with the trigger pull, and make your P320 competition-ready.

Sig Sauer P320 Resources:

If you're getting the Sig Sauer P320 Trigger Spring Kit, then you might find the following Sig Sauer P320 Resources useful in further enhancing your firearm. Download the Sig Sauer P320 Owners Manual or use the Sig Sauer P320 Exploded View as a Parts Diagram to plan your next firearm project.

Sig Sauer P320 Owner's Manual
Sig Sauer P320 Exploded View

M*CARBO No Hassle 100% Lifetime Guarantee:

The Sig Sauer P320 Trigger Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee.

Drop Tested and Approved:

Sig Sauer P320 Trigger Spring Kit is drop Tested according to SAAMI Standard Z299.5 rating (12" & 48").

Tested and Approved:

The Sig Sauer P320 Trigger Spring Kit has been tested repeatedly to ensure reliable operation and safety.

Veteran Owned and Operated Business:

American made Sig Sauer P320 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 Sig Sauer P320 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 (12)
review-star review-star review-star review-star review-star
5.00
My .45 is more responsive!
review-star review-star review-star review-star review-star
Springs went in easy and the result is a far superior shooting experience and faster re-acquisition. Nice work guys!
Great Spring Kit
review-star review-star review-star review-star review-star
These springs are a huge improvement over the factory OEM sig springs.
Pair this with the MCarbo 320 flat trigger and you're in business.

Highly recommend these springs.
Works Great
review-star review-star review-star review-star review-star
Nothing wrong with this kit, it works very well, but try the SS Flat Trigger Upgrade from M-Carbo first. It may be good enough by itself. Both are excellent products.
Worked as advertised
review-star review-star review-star review-star review-star
Installed this kit in my P320 V-Tac with the Sig straight trigger. The trigger pull averaged 4.5 lbs before and 3.2 lbs after using the Lyman trigger pull gauge. The video was invaluable. Followed the steps on my phone as I was installing the springs. Overall I am very happy with the results.
As advertised 1 pound less trigger pull.
review-star review-star review-star review-star review-star
I have a trigger gauge with a thin pull bar so it rides best at the tip of the sig flat trigger so number are lower than where your finger would ride but 3.4 - 3.8 LB before springs installed and 2.2 - 2.6 after. It is a consistent and accurate gauge just not pulling as same spot as finger would. Picture of p320 shows curve at tip of trigger where the gauge rides
review image  
easy upgrade
review-star review-star review-star review-star review-star
This is a well executed upgrade. Easy to install, good instructional video, terrific value.
I put this kit in an X5 Legion and a AXG Pro and it made for a very smooth break. I didn't measure the pull weight before and after, but it feels better in both guns without being scary light.
Spring kit
review-star review-star review-star review-star review-star
I installed the spring kit in my 320 compact . stock curved trigger. the kit brought the trigger weight down to about 5lbs. tested with NRA trigger weight set. it did help my shooting, better grouping. I'll change out my other 320's
A very good product
review-star review-star review-star review-star review-star
My P320 originally had a trigger pull of 6 pounds 7 oz. with all stock parts. I installed an Apex Forward Set Trigger kit and that reduced the trigger pull to 5 pounds 3 oz. I wanted it still lighter, and this kit reduced the pull to 3 pounds 4 oz. I am very satisfied. I still need to test the gun to ensure that the lighter striker spring does not cause any misfires.

Questions & Answers

7 Questions

0 0
Question:
Will this fit the M17?
Dmann90 January 25, 2024 2:02 PM
0 0
Question:
The M*Carbo Flat Adjustable Trigger is a very nice improvement for my Sig P320 Spectre Comp Blackout. I would now like to lighten the trigger pull from where it is now (above 6.5 pounds) to about 4.5 to 5 pounds. I am not sure that I am comfortable with a 4 pound or less trigger on a striker gun with no manual safety. Could I achieve an intermediate trigger weight by using only the lighter sear springs in your trigger spring package (and not using the striker spring)? It seems to me that this would have the added benefit of mitigating concerns about the risk of "light strikes" when using a lighter striker spring.
August 31, 2023 3:59 PM
Answers
0 0
Yes, any combination with OEM springs will work with this spring kit.
Answered by
M*CARBO-Tech / October 30, 2023 2:38 PM
0 0
Question:
Will this fit the p320 x 10mm?
Ram2QM7WX1Z August 30, 2023 4:08 PM
Answers
0 0
Yes
Answered by
M*CARBO-Tech / October 30, 2023 2:42 PM
0 0
Question:
Will the reduced striker spring cause light strikes, or have you guys tested it with different ammo?
S&W DoubleTapper August 4, 2023 9:36 AM
0 0
Question:
Does this fit the P320XTen 10 mm ? Does the trigger fit as well ?
Jay Epstein July 7, 2023 1:14 PM
Answers
0 0
yes, for the spring kit but the trigger has not been tested with the XTen, but they have the same "footprint" as the X-series flat triggers as Sig.
Answered by
M*CARBO-Tech / October 30, 2023 2:43 PM
0 0
Question:
Will this spring kit actually help a SIG P320 Legion X5 model? Currently trigger pull is just under 4 lbs. In addition this P320 model comes with a flat trigger. Would your flat trigger be of any advantage to this particular SIG model, the Legfion X5?
March 12, 2023 2:16 PM
Answers
0 0
If your firearm is already under 4# then you may not see a difference with our spring kit. It may bring it down even further, or it may only come down an ounce or two. Our flat trigger is adjustable, so you can set the pre travel and over travel.
Answered by
kenneth@mcarbo.com57283 / March 15, 2023 9:23 AM
0 0
Question:
I know the description says this spring kit fits ALL P320 models. Does it improve the X5 Legion trigger as well? Their product description mentions the skeletonized trigger but no mention of springs.
February 10, 2023 11:25 PM
Answers
0 0
The kit will fit and function in the X5 Legion. The trigger itself reduces the pull weight on the X5. Our springs will further reduce the weight by 20%-30%.
Answered by
stevenk@mcarbo.com24442 / February 13, 2023 7:42 AM