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Handgun Parts Frame Parts Mainspring Parts Mainsprings ISMI 19 LB. S/S SPRING, 5-PAK Support

Experience unmatched reliability and durability with ISMI's 1911 Mainspring, designed for consistent trigger pull and ignition, crafted to aerospace specs.

ISMI 19 LB. S/S SPRING, 5-PAK

445105195
Variations
Filters:
Variations:

Variations:

Experience unmatched reliability and durability with ISMI's 1911 Mainspring, designed for consistent trigger pull and ignition, crafted to aerospace specs.
1911 MAINSPRING - 19 LB. S/S SPRING, 5-PAK
Not available
Make: 1911 Model: Government, Commander Product no.: 445105195
Not available
34.9 GBP 0 £34.90 *
-10 %
The ISMI 1911 Mainspring offers maximum durability and reliability, designed to aerospace specs for consistent trigger pull and reliable ignition.
1911 MAINSPRING - 15 LB. C/S SPRING
17.9 GBP 15 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445004014
In stock
17.9 GBP 15 £17.90 * £19.90
-10 %
The ISMI 17 lb. mainspring offers superior durability and consistent trigger pull, engineered from chrome silicon or stainless steel for reliable performance.
1911 MAINSPRING - 17 LB. C/S SPRING
17.9 GBP 2 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445105017
In stock
17.9 GBP 2 £17.90 * £19.90
-10 %
Achieve maximum reliability and consistency with the ISMI 19 lb. stainless steel mainspring, engineered to aerospace specs for durability and performance.
1911 MAINSPRING - 19 LB. S/S SPRING, EACH
17.9 GBP 1 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445105191
In stock
17.9 GBP 1 £17.90 * £19.90
-10 %
Experience unmatched reliability and consistency with ISMI's 22 lb. 1911 mainspring, crafted from durable chrome silicon or stainless steel for optimal performance.
1911 MAINSPRING - 22 LB. 1911 S/S SPRING, EACH
17.9 GBP 5 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445000023
In stock
17.9 GBP 5 £17.90 * £19.90
17.9 17.9 5 GBP

Not available.

Product no.: 445105195

Mfr. No.: 19MS5

Notify on availability 34.9 GBP
17.9 17.9 5 GBP
Description Specification Customers reviews Accessories

ISMI 19 LB. S/S SPRING, 5-PAK

Notify on availability

Description:

Enhance your 1911 with ISMI's premium mainspring

The 1911 MAINSPRING, ISMI 19 LB. S/S SPRING, 5-PAK is expertly designed for maximum consistency and reliability, making it an essential upgrade for your firearm.

Product Description

Crafted using CAD technology and built to aerospace specifications, this mainspring is made from either chrome silicon or stainless steel, ensuring corrosion resistance and maximum durability. The spring undergoes a rigorous process including heat treatment, shot peening, and full stress relief to minimize spring set, providing you with reliable performance.

The 1911 AUTO MAINSPRING is available in two popular rates: 19 lb. and 17 lb.. These options allow for a lighter, more consistent trigger pull while ensuring reliable ignition every time.

Specifications

  • Material: Chrome silicon or stainless steel round wire
  • Material: Chrome vanadium flat wire

Upgrade your 1911 with ISMI's mainspring for a noticeable improvement in performance and reliability.



Top takeaways

  1. The 1911 MAINSPRING by ISMI is made from high-quality materials like chrome silicon, stainless steel, or chrome vanadium, ensuring durability and performance.
  2. Designed to aerospace specifications, these mainsprings are heat treated, shot peened, and stress relieved to reduce spring set and maintain consistency.
  3. Available in 19 lb. and 17 lb. rates, these mainsprings are suitable for the 1911 models Government and Commander, providing a lighter and consistent trigger pull.

Attributes

  • Model: 
    Commander
    , 
    Government
  • Weapon type: 
    1911
  • Delivery weight: 0.018kg
  • Shipping height: 1mm
  • Shipping width: 83mm
  • Shipping length: 146mm

Item details

Made in USA

Customers reviews

Customer ratings (2)

3 / 5
Not recommended

Brownells USA Too weak... 09/03/2015

this ISMI 15 lb mainspring is so weak cannot ignite the primers…15lb of Wolff is way better and would ignite any primers….I have 3 and its still sitting gathering dust….

Definitely recommended

Brownells USA GOOD BUY! 28/01/2014

I used this in conjuction with an 18.5 lb recoil spring in a High Standard 1911, Also used a Wilson Combat hammer and sear. This mainspring will lighten your trigger pull, seems to be of good quality.

Variations:

Experience unmatched reliability and durability with ISMI's 1911 Mainspring, designed for consistent trigger pull and ignition, crafted to aerospace specs.
1911 MAINSPRING - 19 LB. S/S SPRING, 5-PAK
Not available
Make: 1911 Model: Government, Commander Product no.: 445105195
Not available
34.9 GBP 0 £34.90 *
-10 %
The ISMI 1911 Mainspring offers maximum durability and reliability, designed to aerospace specs for consistent trigger pull and reliable ignition.
1911 MAINSPRING - 15 LB. C/S SPRING
17.9 GBP 15 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445004014
In stock
17.9 GBP 15 £17.90 * £19.90
-10 %
The ISMI 17 lb. mainspring offers superior durability and consistent trigger pull, engineered from chrome silicon or stainless steel for reliable performance.
1911 MAINSPRING - 17 LB. C/S SPRING
17.9 GBP 2 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445105017
In stock
17.9 GBP 2 £17.90 * £19.90
-10 %
Achieve maximum reliability and consistency with the ISMI 19 lb. stainless steel mainspring, engineered to aerospace specs for durability and performance.
1911 MAINSPRING - 19 LB. S/S SPRING, EACH
17.9 GBP 1 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445105191
In stock
17.9 GBP 1 £17.90 * £19.90
-10 %
Experience unmatched reliability and consistency with ISMI's 22 lb. 1911 mainspring, crafted from durable chrome silicon or stainless steel for optimal performance.
1911 MAINSPRING - 22 LB. 1911 S/S SPRING, EACH
17.9 GBP 5 £17.90 * £19.90
In stock
Make: 1911 Model: Government, Commander Product no.: 445000023
In stock
17.9 GBP 5 £17.90 * £19.90

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