Apex Tactical Spring Kit — for S&W Sigma C, F, & VE Pistols | .40 S&W | Model 107-021 | UPC 856008005383
Upgrade your Smith & Wesson Sigma or SD-series pistol with the Apex Tactical Spring Kit (Model 107-021) — engineered for improved trigger performance, smoother operation, and enhanced control. Specifically designed for S&W Sigma C, F, and VE pistols chambered in .40 S&W, this precision spring kit offers a simple, effective way to reduce trigger pull weight and improve overall shooting comfort without compromising reliability or safety. Whether you’re a competitive shooter, concealed carry user, or range enthusiast, Apex delivers the precision and consistency you need to take your firearm performance to the next level.
Enhanced Trigger Control and Performance
The Apex Tactical Spring Kit is designed to refine your Sigma’s trigger system, providing a smoother, more consistent pull and cleaner break. By optimizing the spring tension within the fire control group, this kit reduces heavy, gritty trigger pull — one of the most common complaints about factory Sigma triggers. The result is a lighter, more predictable trigger press that improves shot-to-shot accuracy and reduces shooter fatigue.
A smoother trigger translates directly into better precision, faster follow-up shots, and more control, especially under rapid-fire or defensive conditions.
Direct Drop-In Installation
No gunsmithing required — this Apex spring kit is a drop-in replacement for your factory components. It’s engineered for a perfect fit with factory tolerances, ensuring easy installation using basic tools and minimal mechanical experience. The design maintains factory safety functions, so you can enjoy improved performance with full confidence in your firearm’s reliability and safety mechanisms.
Compatible Firearms
The Apex Tactical 107-021 Spring Kit is specifically designed for the following Smith & Wesson Sigma models chambered in .40 S&W:
S&W Sigma C-Series
S&W Sigma F-Series
S&W Sigma VE-Series
This kit also supports similar S&W VE pistols, providing the same trigger refinement and smoother action. Always confirm your firearm’s model and compatibility before installation.
High-Quality Apex Engineering
Apex Tactical Specialties is recognized for precision-engineered firearm upgrades trusted by professionals, competitive shooters, and responsible citizens alike. Each component in this spring kit is made from premium-grade materials, thoroughly tested to deliver consistent performance and long-lasting durability. Apex products are proudly designed and manufactured in the USA to exacting standards.
Benefits of the Apex Spring Kit
Reduces Trigger Pull Weight: Provides a smoother and lighter trigger pull for enhanced accuracy.
Improves Consistency: Eliminates the rough, uneven feel of stock Sigma triggers.
Maintains Reliability: Preserves full safety function and ignition reliability.
Easy Drop-In Installation: No permanent modification or gunsmithing required.
Increases Shooter Comfort: Smoother operation reduces fatigue during long training sessions.
Made in the USA: Engineered with the precision and craftsmanship Apex Tactical is known for.
Technical Specifications
Brand: Apex Tactical Specialties
Model: 107-021
UPC: 856008005383
Compatibility: Smith & Wesson Sigma C, F, and VE series (.40 S&W)
Type: Drop-In Trigger Spring Kit
Installation: Simple, user-friendly installation (gunsmith optional)
Purpose: Trigger performance enhancement and pull weight reduction
Installation Tips
Always ensure your firearm is unloaded and safe before installation.
Carefully follow Apex’s included instructions for step-by-step installation.
Conduct a full function check after installation to verify proper trigger and safety operation.
If unsure, consult a qualified gunsmith to assist with setup and testing.
Why Choose Apex Tactical for Your S&W Sigma?
Because performance and reliability matter. Apex Tactical is an industry leader in aftermarket trigger and spring solutions, known for transforming the shooting experience through smart engineering and superior materials. With the Apex 107-021 Spring Kit, you’re not just upgrading your trigger — you’re improving your control, precision, and confidence in every pull.
From range sessions to home defense, this Apex kit offers the smooth, crisp trigger feel your S&W Sigma should have had from the factory.
Upgrade. Refine. Perform. — Apex Tactical Spring Kit for S&W Sigma C, F, & VE Pistols (.40 S&W) Model 107-021
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