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