The SIG SAUER RECOIL CALIBRATION PAK by WOLFF includes extra power recoil springs for P-226 models in 15 lb., 16 lb., 18 lb., and 20 lb. options.
Each pack comes with three extra power firing pin springs to enhance performance.
The factory standard recoil spring for the P226 9mm is 15 lb., while the .357 Sig and .40 S&W models are 20 lb., allowing for customization based on the factory settings.
The Apex Tactical FN 509 Slide Maintenance Kit includes replacement springs designed for the FN 509 handgun, ensuring reliable function up to 10,000 rounds.
All springs in the kit are direct, drop-in replacements for the original equipment manufacturer (OEM) springs in the FN 509 slide.
The maintenance kit is compatible with all FN 509 models except for the FNS series, including the FNS Longslide and FNS Compact.
The kit reduces trigger pull weight from over 12 lbs to 9 lbs for centerfire J-frame S&W revolvers.
Includes a new rebound slide spring, main spring, and an Apex XP firing pin kit.
No fitting or modification needed; factory parts are simply replaced with the kit components.