Wilson Combat 178 Custom Tune Spring Kit Multi S&W K/L & N Frames

The Wilson Combat Custom Tune Spring Kit for Smith & Wesson K, L, and N frame revolvers is designed to improve the trigger pull through high-quality, reduced-power mainspring and reduced-power rebound trigger springs (12#, 13#, and 14#). It uses high tensile spring wire to deliver reliable function and smoother, lighter single and double-action triggers. The kit is easy to install and significantly enhances revolver performance, though some variability in primer compatibility may affect ignition reliability. Not intended for rimfire models.