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Home Handgun Parts Frame Parts Mainspring Parts Mainsprings ISMI 1911 MAINSPRING

ISMI
1911 MAINSPRING

(2)
445000023
Designed For Maximum Consistency & Reliability
CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
SPECS: Chrome silicon or stainless steel round wire, chrome vanadium flat wire.
More...
11.9 36.9 5 GBP
Product no.: 445000023
ISMI 22 LB. 1911 S/S SPRING, EACH
Mfr Part: 22MS CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
12.9 GBP 9 £12.90 *
Delivery time approx. 7-14 days.
9 pcs. in the USA warehouse
Specs: Make: 1911 Model: Government, Commander
Ask question

Top takeaways

  1. The 1911 Mainspring by ISMI is designed to aerospace specifications for maximum durability and performance, available in 22 lb. spring rate.
  2. Made from corrosion-resistant materials such as chrome silicon, stainless steel, or chrome vanadium, ensuring long-lasting reliability.
  3. Suitable for 1911 models Government and Commander, the spring is heat treated, shot peened, and stress relieved to minimize spring set.

Attributes

Make: 1911 Model: Commander,Government Delivery weight: 0.005kg

Item details

Made in USA



Product no.: 445004014
ISMI 15 LB. C/S SPRING
Mfr Part: 15MS CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
11.9 GBP 73 £11.90 *
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: Make: 1911 Model: Government, Commander
Ask question

Top takeaways

  1. The ISMI 1911 Mainspring is crafted from corrosion-resistant materials such as chrome silicon and stainless steel, adhering to Aerospace specifications for durability and performance.
  2. Designed for the 1911 AUTO with specific models including Government and Commander, the mainspring is available in popular 19 lb. and 17 lb. rates for a lighter and consistent trigger pull.
  3. Each spring is heat treated, shot peened, and stress relieved to reduce spring set and ensure maximum reliability.

Attributes

Make: 1911 Model: Commander,Government Delivery weight: 0.005kg

Item details

Made in USA

Product no.: 445105017
ISMI 17 LB. C/S SPRING
Mfr Part: 17MS CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
12.9 GBP 114 £12.90 *
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: Make: 1911 Model: Government, Commander
Ask question

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, the spring is heat treated, shot peened, and stress relieved to reduce spring set and provide a lighter, consistent trigger pull.
  3. It is available in 17 lb. and 19 lb. rates and fits 1911 model handguns in both Government and Commander sizes.

Attributes

Make: 1911 Model: Commander,Government Delivery weight: 0.005kg

Item details

Made in USA

Product no.: 445105191
ISMI 19 LB. S/S SPRING, EACH
Mfr Part: 19MS CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
11.9 GBP 46 £11.90 *
Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse
Specs: Make: 1911 Model: Government, Commander
Ask question

Top takeaways

  1. The ISMI 1911 mainspring is made from high-quality materials like chrome silicon or stainless steel to ensure durability and performance.
  2. Designed to aerospace specifications, the spring is heat treated, shot peened, and stress relieved to minimize spring set and maintain consistency.
  3. Available in a 19 lb. weight, this mainspring provides a lighter and consistent trigger pull for 1911 models Government and Commander.

Attributes

Make: 1911 Model: Commander,Government Delivery weight: 0.005kg

Item details

Made in USA

Product no.: 445105195
ISMI 19 LB. S/S SPRING, 5-PAK
Mfr Part: 19MS5 CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
36.9 GBP 3 £36.90 *
Delivery time approx. 7-14 days.
3 pcs. in the USA warehouse
Specs: Make: 1911 Model: Government, Commander
Ask question

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

Make: 1911 Model: Commander,Government Delivery weight: 0.018kg

Item details

Made in USA


Upgrade your 1911 with ISMI 22 lb. Mainspring 🎯 Aerospace-grade, corrosion-resistant for max durability & consistent performance. Shop now! 🔧✨

Designed For Maximum Consistency & Reliability
CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stainless steel or chrome vanadium for maximum durability, consistency and reliable performance. Built to aerospace specifications; heat treated, shot peened and fully stress relieved to minimize spring set. 1911 AUTO MAINSPRING - Stainless steel (SS) or chrome silicon (CS); wound in the very popular 19 lb. and 17 lb. rate for lighter, consistent trigger pull with reliable ignition.
SPECS: Chrome silicon or stainless steel round wire, chrome vanadium flat wire.
More...
Upgrade your 1911 with NOWLIN's Match Grade Sear Spring 🎯 Precision-engineered for top performance & durability. Perfect for light, match-quality triggers. Shop now! 🔧✨
NOWLIN MATCH SEAR SPRING
1911 MATCH GRADE SPRING
NOWLIN
In stock
£14.90 *
Sear Springs
4
🎯 Upgrade your 1911 with Wilson Combat's #1 Match Trigger! Long, 3-hole design for a lighter, precise pull. 🛠️ Easy install & adjustable. Get the competitive edge now! 🔫
WILSON COMBAT 1911 #1 MATCH TRIGGER, LONG, 3-HOLE
1911 COMPETITION MATCH #1 TRIGGER
WILSON COMBAT
In stock
£31.90 *
Triggers
0
🔧 Enhance your 1911's performance with the Cylinder & Slide Light Pull Sear Spring. Achieve a smoother 1.5lb trigger pull. Perfect for Government, Commander, Officers models. Shop now! 🛒
CYLINDER & SLIDE 1911 LIGHT PULL SEAR SPRING
1911 LIGHT PULL SEAR SPRING
CYLINDER & SLIDE
In stock
£15.90 *
Sear Springs
4.6
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