Spring Kit for SDVE

This spring kit is a direct drop-in replacement set for the SDVE and Sigma-series pistols. It addresses the primary complaint of these platforms: a heavy, gritty factory trigger pull that can impede shot-to-shot recovery and precision. By replacing the factory trigger return spring and sear spring with matched-rate components, this kit reduces pull weight by approximately 2 lbs., smooths the take-up, and shortens the reset distance. The result is a more predictable, repeatable trigger cycle suitable for duty, carry, or personal protection use.

Compatibility

• Smith & Wesson SD9 VE
• Smith & Wesson SD40 VE
• Smith & Wesson Sigma series (9mm and .40 S&W)
• Not compatible with M&P, Shield, or SW9/SW40 variants

Key Features

• Pull weight reduction: Approximately 2 lb. decrease from factory weight (actual reduction varies with individual pistol)
• Smoother trigger stroke: Reduced stacking and grit through the take-up phase
• Improved reset: Shorter, more tactile reset for faster follow-up shots
• Direct drop-in: No fitting, filing, or permanent modification required; retains all factory safeties
• Duty-rated materials: Springs are manufactured to sustain continuous carry and repeated use without fatigue

Installation Difficulty

Difficulty: 2/5
Requires: Small punch set, non-marring hammer, slave pin or paperclip for sear housing pin retention. Basic familiarity with SDVE/Sigma frame disassembly recommended. Complete installation typically takes 15–30 minutes. A factory service manual or detailed video guide is advised for first-time installers.

FAQ

Will this spring kit affect the trigger pull weight on all SDVE/Sigma models the same way?

No. The stated 2 lb. reduction is a baseline. Actual pull weight after installation depends on the specific pistol’s tolerance stack, break-in wear, and lubrication state. Some users report a reduction of 1.5–2.5 lbs. from factory weight.

Does this kit require any permanent modification to the frame or trigger components?

No. The springs are direct replacements for the factory trigger return and sear springs. No filing, drilling, or removal of material is necessary. The pistol can be returned to factory configuration by reinstalling the original springs.

Is this kit safe for concealed carry or duty use?

Yes. The kit is designed to maintain positive sear engagement and drop-safety compliance. It does not alter trigger geometry, overtravel stops, or internal safeties. The reduced pull weight remains within accepted duty/carry parameters (typically 4.5–6.5 lbs. after installation).

Shipping & Warranty

Ships within one business day via USPS Priority. Limited lifetime warranty against manufacturing defects. Springs are consumable items; normal wear from high-round-count use is not covered. Contact our service team for warranty evaluation if a spring breaks or deforms under standard operation.