The Apex Tactical Action Enhancement Trigger (brand part number 107003) directly replaces the factory hinged trigger on the Smith & Wesson SD9/40/357, SDVE9/40/357, and Sigma pistols with a solid-body polymer trigger and a center-mounted pivoting safety. Apex built this trigger with a rounded face for a smoother, more comfortable finger surface, and it measurably tightens up the action, cutting pre-travel by roughly 20 percent and over-travel by about 10 percent compared to the factory trigger. It works as a standalone upgrade or paired with an Apex SD or Sigma spring kit.

Key Specifications

• Fits the S&W SD9/40/357, SDVE9/40/357, and Sigma pistols.
• Built as a solid-body polymer trigger with a rounded face.
• Uses a center-mounted pivoting safety.
• Reduces pre-travel by approximately 20% compared to the factory trigger.
• Reduces over-travel by approximately 10% compared to the factory trigger.
• Works as a standalone component or paired with an Apex SD/Sigma spring kit.
• Finished in black as a direct factory replacement.

Frequently Asked Questions

Do I need a spring kit for this trigger to work? No, it works as a standalone component, though it’s also designed to pair with an Apex SD or Sigma spring kit for further enhancement.

How much does this reduce trigger travel? It cuts pre-travel by about 20% and over-travel by about 10% compared to the factory hinged trigger.

What pistols is this trigger compatible with? It’s built for the S&W SD9/40/357, SDVE9/40/357, and Sigma pistol families.

Buy the Apex Tactical Action Enhancement Trigger for S&W SD/Sigma, Black

Tighten up your SD or Sigma’s trigger feel with a direct drop-in upgrade. Order the Apex Tactical Specialties trigger from our gun accessories lineup, shipped fast from our Lubbock, Texas gun shop.