ISMI – 20 Pound 1911 Commander Recoil Spring
ISMI Springs are designed for maximum consistency and reliability. American made and CAD designed and built to aerospace specifications from Chrome Silicon wire for maximum durability, consistency and reliable performance. Heat treated, shot peened and fully stress relieved to minimize spring set.
12 Month Replacement Warranty
All ISMI springs are covered by a 12 month replacement warranty. Even for failure due to wear.