Wilson Combat 178 Custom Tune Spring Kit for S&W K/L/N Frame Revolvers

The Wilson Combat 178 Custom Tune Spring Kit transforms factory S&W K, L, and N frame revolvers with precision-engineered springs that reduce trigger pull weight while maintaining reliable ignition. This multi-frame compatibility kit addresses the common issue of heavy, gritty factory triggers that hinder accuracy and shooting comfort.

What Makes This Different

Wilson Combat engineers each spring to exact tolerances using premium steel alloys, unlike generic aftermarket springs that often compromise reliability. The kit reduces double-action trigger pull by 2-3 pounds while maintaining full primer strike energy. Factory springs typically measure 12-14 pounds in double action, while this kit achieves 9-11 pounds with consistent break characteristics.

Key Features

• Reduces double-action trigger pull weight by 2-3 pounds for improved accuracy
• Compatible with Smith & Wesson K-frame (medium), L-frame (medium-large), and N-frame (large) revolvers
• Premium alloy steel construction maintains 100% reliability with all primer types
• Includes mainspring, trigger return spring, and cylinder stop spring
• Professional-grade springs used by competitive shooters and law enforcement armorers
• Maintains factory safety standards while enhancing trigger feel
• Easy installation with basic gunsmithing tools and experience

This spring kit delivers measurable performance improvements for competitive shooting, where consistent trigger control determines match outcomes. Law enforcement officers benefit from reduced finger fatigue during qualification courses, while recreational shooters experience enhanced accuracy at the range. The springs maintain consistent performance across temperature extremes and high round counts.

Technical Specs

• Compatibility: S&W K-frame, L-frame, and N-frame revolvers
• Material: Heat-treated alloy steel springs
• Trigger pull reduction: 2-3 pounds in double action
• Kit includes: Mainspring, trigger return spring, cylinder stop spring
• Installation: Requires basic gunsmithing knowledge
• Manufacturer: Wilson Combat
• Country of origin: USA
• UPC: 874218000387

Wilson Combat's reputation for precision manufacturing ensures these springs meet the demanding standards of professional shooters. The 178 kit represents decades of research into optimal spring rates for Smith & Wesson's most popular revolver frames.