ISMI 24lb Recoil Spring for Glock Full Size ONLY

Designed to fit Glock Models: G17, G17L, G20, G21, G22, G24, G31, G34, G35, G37 - Full Size ONLY.

Race-proven spring technology for full-size Glock pistols, the ISMI 24 lb. Recoil Spring is engineered for shooters running compensated slides, hot loads, or suppressors where a heavier spring improves felt recoil and cycling consistency. Manufactured with aerospace-grade alloys and motorsport manufacturing processes, this spring delivers long life and repeatable performance under heavy use.

ISMI springs are made from certified chrome-silicon then heat-treated, shot-peened, and stress-relieved after winding to eliminate residual stresses and resist fatigue. Chrome-silicon springs maintain far tighter tolerances and offer up to 10× the service life of traditional music-wire springs; the same engineering used in IndyCar and Formula One valve springs that endure millions of cycles. Get yours at NDZ Performance today!

Features:

• 24 lb. nominal spring rate, tuned for full-size Glock platforms and heavy-duty use.
• Chrome-silicon or stainless construction for superior fatigue resistance and corrosion protection.
• Heat-treated, shot-peened, and stress-relieved for maximum durability and consistent performance.
• Holds tighter tolerances during compression and cycling for reliable feeding and ejection.
• Motorsport-grade manufacturing: engineered to withstand millions of cycles.
• Ideal for compensated slides, +P or hot loads, and suppressed use.
• Made in the USA.

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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.