Wolff Variable Power Recoil Spring 10 pound load rating – 42414
To be used in full size 5″ slides.
For use in:
Colt 1911/1911A1 1991 Gov’t MKIV and Gold Cup Models
.45 Calliber – Also Super .38/9mm
Reduced Power for .45 Calliber
Factory Standard .38/9mm
Also includes an extra power firing pin spring which prevents firing pin float.