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Sig Sauer / GSG 1911 Main Spring Calibration Kit

402.20.17.1 | Sig Sauer 1911-22 | GSG 1911-22 | Mainspring for 1911 | Factory Main Spring | 1911-22 mainspring | 1911 hammer spring | 922 spring | 1911 spring | 1911springs | reduced power | trigger job | calibration kit
 
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Replace your worn out spring and improve performance. These hammer (main springs) are replacement springs for the GSG and Sig Sauer 1911-22 pistols. The factory part number for this spring is 402.20.17.1 (part #65 in the exploded diagram). These springs are not for the centerfire 1911 pistols but is specifically made for the 22LR. It is shorter than the typical 45ACP type 1911. Direct replacement factory weight main spring is 20 pounds. Just like our centerfire hammer and recoil springs for the 1911 and Glock pistols, each spring weight has a designated color to help easily identify the spring value. The reduced power hammer springs (16 & 18 pound) are for you to experiment with your trigger pull weight. Keep in mind that using too light of a spring may induce failures to fire. You can get the individual spring HERE

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MSRP: $9.95
Our Price: $8.25
Savings: $1.70


Shipping: Usually Ships in 1 to 2 Business Days
Part #: 102-KTHS-0GSG
Qty:

Installation Instructions RESTRICTIONS
 
Replacement hammer / main springs for the GSG and Sig Sauer 1911-22 pistols. Kit contains 16, 18 and the factory 20 pound.
Main Spring Housing Replacement
Main Spring Housing Install

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 12 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 Sig Sauer / GSG 1911 Main Spring Calibration Kit November 21, 2024
Reviewer: Edward Sanchez from Ladson, SC United States  
The Sig Sauer / GSG 1911 Main Spring Calibration Kit was able to fix the lite primer strike issue my Sig Sauer 1911-22 was having. I'm still having issues with certain brands of .22LR amo, but the amo it does like, works reliably magazine after magazine.
I recommend these springs if you are having lite primer strike issues.

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  0 of 0 people found the following review helpful:
 
4 of 5 Calibration March 6, 2024
Reviewer: Robert Hicks from Aurora, CO United States  
Able to get the feel I was looking

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  0 of 0 people found the following review helpful:
 
5 of 5 New Mainspring for 1911 22 June 28, 2023
Reviewer: Joe Collins from Ewing, NJ United States  
Having a problem with out of the box Sig/ATI/Mauser light strikes.  New 20 lb mainspring along with extended firing pin and enhanced recoil system seems to have corrected the issue.

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  0 of 0 people found the following review helpful:
 
5 of 5 Sig Sauer / GSG 1911 Main Spring Calibration Kit August 19, 2021
Reviewer: Matt from Lexington , SC United States  
Fits GSG perfectly

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  0 of 0 people found the following review helpful:
 
5 of 5 Spring kit August 4, 2021
Reviewer: Brian Casamento from , windham ny  
Well made springs but will not fit my Ed brown back strap plunger. Had to modify spring.

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