Fine Tune For Light, Standard Or Heavy Loads
Like all Wolff springs, these for the 1911 Auto in .45, .38
Super or 9mm are the finest, most reliable, longest lasting ones available. The springs of choice for most of the nation's top builders. Except where noted, all recoil springs are supplied with an extra power firing pin spring that keeps the firing pin stop in place and prevents firing pin “float”; an addition recommended by pistolsmith Bill Wilson. TYPE B - Factory Replacement Spring For Hardball Loads exactly matches the specs of the original factory spring. Govt. Model does NOT come with extra power firing pin spring. Commander may also be used as an extra power spring for 9mm/.38 Super pistols and comes with an XP firing pin spring.
1911, Issue:10, Page:033
Big Book Catalog, Issue:66, Page:122
Sinclair, Issue:1A, Page:031