Wolff's 22 lb. recoil spring is designed for the 1911 Auto in .45, .38 Super, or 9mm, providing reliability and longevity.
This extra power spring is ideal for hardball and heavier loads in the Commander model, which typically comes with an 18 lb. spring.
Each spring includes an extra power firing pin spring, a feature recommended by pistolsmith Bill Wilson to maintain firing pin stop and prevent firing pin float.