Spring Kit for SDVE

If you’ve ever squeezed the trigger on a factory Smith & Wesson SDVE or Sigma, you know the stock pull feels like dragging a brick through wet sand. That’s where the Apex Spring Kit for SDVE comes in — a direct drop-in upgrade that shaves off roughly 2 lbs of pull weight, smooths out the gritty stack, and sharpens the reset. At just $25, it’s the single most cost-effective way to transform your pistol from a clunky defensive tool into a genuinely enjoyable shooter.

Manufacturer	Apex Tactical Specialties
Model	Spring Kit for SDVE / Sigma
Material	Heat-treated chrome silicon wire (per manufacturer specs)
Compatibility	Smith & Wesson SD9VE, SD40VE, Sigma series (all generations)
Finish	Black oxide coating
Weight	0.3 oz (complete kit)
Condition	New, aftermarket upgrade

Key Features

• 2 lb Pull Weight Reduction — Why it matters: Drops the factory 8-9 lb trigger down to a crisp 6-7 lb range, making double-action pulls manageable for follow-up shots without sacrificing safety margins.
• Trigger Smoothing — Why it matters: Eliminates the gritty, stacking feel common to stock SDVE triggers, giving you a consistent press every time — critical for accuracy under stress.
• Improved Reset — Why it matters: Shortens and defines the trigger reset so you feel a positive click, letting you shoot faster and more confidently in competition or defensive drills.
• Direct Drop-In Installation — Why it matters: No fitting, no gunsmithing required. Swap out the factory springs in under 15 minutes with basic punches, and you’re back on the range.
• Duty-Ready Reliability — Why it matters: Apex designed these springs to maintain 100% ignition reliability with all factory and defensive ammunition, so you can carry with confidence.

Who It’s For

This spring kit is for the SDVE owner who wants a better shooting experience without buying a whole new pistol. It’s perfect for concealed carriers who find the stock trigger too heavy, competition shooters on a budget, and collectors who appreciate the hidden potential in Smith’s budget line. If you’ve got a Sigma gathering dust in the safe, this kit will make you want to shoot it again.

Pros & Cons

• Pros: Affordable at $25, noticeable pull weight reduction, smooths trigger feel, improves reset, easy install, maintains reliability with all ammo types.
• Cons: Does not change the trigger shoe geometry or overtravel — you’ll still have the stock hinge-style trigger feel. Some users report a slightly lighter striker strike, though Apex tests show it still ignites all primers including hard military-spec ones.

Comparison

Feature	Apex Spring Kit for SDVE	Lone Wolf Distributors Trigger Spring Kit	Zev Technologies Fulcrum Trigger (SDVE)
Price	$25	$19	$185
Pull Weight Reduction	~2 lbs	~1.5 lbs	~3 lbs (with shoe swap)
Installation	Drop-in, no fitting	Drop-in	Requires fitting and sear engagement check
Reset Improvement	Yes, positive click	Minimal	Short, adjustable
Reliability Retention	100% with all ammo	Some reports of light primer strikes	High, but requires careful setup
Best For	Budget upgrade, carry, duty	Budget tinkerers	Competition shooters, high-end builds

While Lone Wolf offers a cheaper option, their springs can introduce light strikes. Zev’s system is superb but costs seven times more and needs professional installation. Apex hits the sweet spot for the vast majority of SDVE owners.

FAQ

Will this spring kit work in my SD9VE?

Yes, the Apex Spring Kit for SDVE is compatible with all SD9VE, SD40VE, and Sigma series pistols. It replaces the mainspring, trigger return spring, and striker block spring.

Is the trigger pull still safe for concealed carry after installation?

Absolutely. Apex designed this kit to reduce the pull weight to approximately 6-7 lbs, which is still heavier than most striker-fired carry pistols (like a Glock at 5.5 lbs). It maintains positive sear engagement and does not compromise drop safety.

Do I need any special tools to install this kit?

You’ll need a 1/16” punch, a small hammer, and a pair of tweezers or needle-nose pliers. No power tools or gunsmithing experience required. Apex includes a detailed instruction sheet with photos.

Will this void my Smith & Wesson warranty?

Installing aftermarket springs may void the warranty if S&W determines the modification caused a malfunction. However, the kit is completely reversible — you can swap the factory springs back in before sending the gun in for service.

How much does trigger pull weight drop on average?

Per Apex’s testing, the kit reduces pull weight by 1.5 to 2.5 lbs depending on the individual gun’s tolerances. Most users report a final pull weight of 6-7 lbs.

✅ Nationwide delivery (all 50 states) | ✅ Ships 1-2 business days | ✅ 30-day returns | ✅ Secure checkout

Looking for more ways to upgrade your SDVE? Check out our Smith & Wesson SD & SDVE Upgrades category or browse Trigger Parts and Apex Tactical products.

Last updated: April 2026