Wilson Combat 321 Custom Tune Spring Kit S&W J Frame Stainless Steel

The Wilson Combat 321 Custom Tune Spring Kit is an aftermarket trigger tuning package built specifically for Smith & Wesson J Frame revolvers. Designed for shooters who want to refine the double-action trigger pull on their small-frame carry revolvers, the kit allows the user to swap out factory springs and experiment with reduced-power alternatives to find the ideal balance of smooth pull and reliable ignition.

The kit includes four stainless steel springs finished in a natural silver tone: one 8 lb reduced-power hammer spring and three reduced-power rebound trigger springs in 13 lb, 14 lb, and 15 lb weights. Each spring is built from corrosion-resistant stainless steel for long service life, and the "RP" (reduced power) ratings give the end user a range of spring tensions to test until the trigger feel matches their preference.

Wilson Combat's Custom Tune line is one of the most recognized names in 1911 and revolver drop-in parts, and the 321 kit brings that same level of fit and finish to the J Frame platform. Installation requires basic gunsmithing skills and partial disassembly of the revolver to access the hammer and trigger rebound springs. Whether you carry a J Frame daily or use it as a range gun, this kit offers a straightforward, reversible way to smooth out the double-action pull.