If you’re running a Smith & Wesson SD or SDVE in .40 S&W, you already know the factory trigger leaves a lot to be desired. That gritty pull and sluggish reset? Not ideal for a defensive piece. Here at Kentucky Gun Shop in Louisville, we see a lot of guys swapping out stock parts, and Apex Tactical out of Arizona is the go-to for a reason. This 107120 Spring Kit is built to give you a cleaner, more predictable trigger without turning your pistol into a race gun.
The kit includes the trigger spring, striker block spring, and SD striker spring. Drop these in, and you’ll feel the difference right away—smoother take-up, a crisper break, and a reset that actually tells you it’s there. It’s designed for duty and carry use, so you’re not sacrificing reliability for a lighter pull. Apex has been doing this long enough to know what works, and this kit is a solid standalone upgrade. If you want even more, it pairs with the Apex SD Polymer Action Enhancement Trigger, but honestly, just the springs alone will wake up that trigger.
We’re a licensed FFL dealer right here in Louisville, and we ship to all 50 states. So whether you’re local or out in Oregon, we can get this kit to your door or to your preferred FFL for transfer. No fuss, no runaround—just good parts at a fair price. Twenty-seven fifty is a small investment for a trigger that feels like it should’ve come that way from the factory.
Fitment note: This is specifically for the .40 S&W S&W SD and SDVE models. Double-check your model before ordering. If you’ve got questions, give us a call or stop by the shop. We’re happy to talk triggers, springs, or whatever else you’re working on. Apex Tactical makes the parts, and we make sure you get ’em fast.





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