Factory weight is 9 lb. Use heavier 11, 12, or 13 lb. spring to improve cycling reliability, especially with hot loads. The LCP® recoil “spring” consists of an outer and inner spring; each recoil spring pair comes with an extra-power firing pin spring to further promote reliable ignition. Recoil Calibration Pak contains one each 11, 12, and 13 lb. recoil springs, plus three extra-power firing pin springs.
Big Book Catalog, Issue:71, Page:232
Provides Enhanced Control
For owners of AR-style pistols, the decreased size and weight paired with the rifle-caliber rounds often chambered in these compact platforms means that any add-on that provides enhanced control is a welcome enhancement. The DoubleStar Strongarm Pistol Brace is one of the easiest accessories on the market, attaching to most pistol buffer tubes easily through a dual-clamp attachment system.
This Strongarm stabilizing brace ships with the pistol buffer tube recommended for use by DoubleStar, as well as a hook-and-loop stabilizing strap that enhances control at the range when wrapped around a shooter's forearm.
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:11, Page:033
Big Book Catalog, Issue:71, Page:127
Sinclair, Issue:1A, Page:031