ISMI Recoil Spring Tuners Pack for Smith & Wesson SD9VE SD40VE 15 18 20LB

Designed to fit Smith & Wesson Models: SD9, SD9 VE, SD40, SD40 VE.    Calibers: 9mm, .40 Cal.

Now available at NDZ Performance; precision-tuned recoil springs for shooters who want durability, consistency, and repeatable performance in their Smith & Wesson SD pistols. These ISMI Premium Springs are wound from aerospace-grade chrome-silicon alloy, heat-treated, shot-peened, and stress-relieved to deliver racing-grade reliability for your S&W SD9VE / SD40VE. These aren’t cheap music-wire knockoffs; they use the same engineering and manufacturing processes found in IndyCar and Formula One valve springs. Swap in the ISMI spring that matches your ammunition and shooting style to tune felt recoil, slide velocity, and lock-up timing. Available in 15, 18 and 20 lb. spring rates to cover standard to heavier loads, competition use, and suppressed setups where extra spring force improves reliability. Get yours at NDZ Performance today!

Features:

• Aerospace-grade chrome silicon construction: Holds tolerances under heat and repeated cycling.
• Heat treated, shot-peened, stress relieved: Racing-grade process.
• Available spring weights: 15 lb., 18 lb., & 20 lb.: Tune system to your ammo, recoil impulse, or aftermarket components.
• Engineered for longevity and repeatable performance: More consistent slide timing and trigger reset over thousands of rounds.

See our complete line of Springfield SD9 & SD40 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.