ISMI Recoil Spring for Smith & Wesson SD9 & SD40 VE 15lb

Designed to fit Smith & Wesson Models: SD9, SD9 VE, SD40, SD40 VE.

Precision tuning with race-grade durability, the ISMI 15 lb. recoil spring for the Smith & Wesson SD9 & SD40 VE pistols is available at NDZ Performance. This direct-replacement recoil spring is engineered to improve slide timing, consistency, and service life. Built from aerospace-spec chrome-silicon then heat-treated, shot-peened and stress-relieved; ISMI springs hold tighter tolerances and resist fatigue far better than standard music-wire springs. Provides a stable 15 lb. spring rate tuned for reliable cycling with standard loads. It reduces variation in slide velocity and lockup over thousands of rounds for more consistent function, and supports tuned systems and helps maintain predictable recoil impulse and trigger reset. Get yours at NDZ Performance today!

Features:

• Spec: 15 lb. spring rate (verify exact model/part before ordering).
• Materials: Aerospace chrome-silicon (or stainless option) with heat treatment and shot-peening.
• Fitment: Designed for Smith & Wesson SD9VE / SD40VE platforms.
• Durability: Engineered for extended service life and consistent cycling.
• Flat/round wire options: Available depending on SKU (check product listing).

See our complete line of Springfield SD9 & SD40 Products here

Important: Not compatible with Glock Guide Rods, using these springs with a Glock guide rod in your SD9 or SD40 will result in damage to your firearm. 

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.