Apex SCK for S&W Shield Duty/Carry Action Enhancement Trigger Kit 9MM .40

Designed to fit Smith & Wesson Models: M&P Shield.    Calibers: 9mm, .40 S&W.

Upgrade your S&W Shield 9mm or .40 with the Apex SCK Duty/Carry Action Enhancement Trigger Kit, a comprehensive, drop-in solution designed to deliver a smoother, cleaner, and more controlled trigger experience—ideal for defensive carry and duty use.

This 7-piece kit includes everything needed to improve trigger performance while maintaining safe and reliable function. No need for expensive gunsmith services—this is a DIY upgrade built for easy home installation. Engineered by Apex Tactical Specialties, the industry leader in S&W performance upgrades, this kit brings competition-grade refinement to your carry gun—no gunsmith required. Made in the USA.

Kit Includes:

• Apex Fully Machined Sear – Reduces pull weight, over-travel, and shortens reset.
• Ultimate Striker Block Kit – Smooths trigger uptake and minimizes reset "double-click".
• Trigger Return Spring – Sets trigger pull in the mid 5 lb. range with consistent uptake pressure.
• Shield Slave Pin – Simplifies installation by maintaining tension during assembly.
• Sear Spring – Assists with sear return and trigger consistency.

Performance Benefits:

• Trigger pull weight reduced to ~5 lbs.
• Smoother trigger uptake and shorter reset.
• Reduced over-travel for quicker, cleaner breaks.
• Maintains duty/carry reliability.

See our complete line of Smith & Wesson Shield Products here

Note: NDZ always recommends any part be installed by a qualified and trained gunsmith. NDZ promotes the use of safety practices and gear when working on any firearm.