9MM Recoil Tuning Kit – ISMI Recoil Spring – Government

9mm Recoil Tuning Kit – ISMI Recoil Springs – Government 5″

Precision Recoil Spring Tuning for 5″ 9mm 1911 and 2011 Pistols

Fine-tune your SA Prodigy 5.0 or any Government-length 5″ 9mm 1911/2011 with this ISMI Recoil Spring Tuning Kit. First and foremost, this kit provides the exact spring weights needed to properly match your recoil system to both your ammunition and your shooting style. As a result, your pistol cycles noticeably smoother, shoots flatter under recoil, and maintains dependable reliability across a wide range of loads.

Moreover, rather than guessing or settling for a single compromise spring, this tuning kit allows you to methodically dial in performance exactly where you want it. Consequently, your pistol feels more controllable, more predictable, and far more consistent from shot to shot, especially during fast strings or competitive shooting.

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What’s Included in the Tuning Kit

Four ISMI Springs for Complete Adjustment Range

This recoil tuning kit includes four genuine ISMI recoil springs, each specifically designed for Government-length recoil systems using the EGW guide rod setup. Together, these springs cover everything from ultra-light target loads to heavy Major Power Factor and +P ammunition.

Included spring weights:

• 7 lb ISMI recoil spring

• 9 lb ISMI recoil spring

• 10 lb ISMI recoil spring

• 11 lb ISMI recoil spring

Because these springs span a broad and practical weight range, you can fine-tune slide speed, recoil impulse, and feeding reliability without changing other components. Therefore, adjustments remain simple, fast, and repeatable.

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Why Use a 9mm Recoil Tuning Kit

Match the Spring to the Load for Better Performance

While a factory spring often works well for general shooting, different ammunition loads move the slide at different speeds. Therefore, matching the spring weight to your specific load becomes increasingly important as performance demands rise.

When you properly tune your recoil system, your pistol:

• Cycles more smoothly and consistently

• Feeds and ejects more reliably

• Returns to target faster between shots

• Feels noticeably softer and flatter in recoil

• Reduces unnecessary frame and slide wear

As a result, your Prodigy or 5″ 9mm 1911 not only runs better during each session, but also maintains long-term durability.

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Spring Weight Selection Guide

Choose the Right Spring for Your Load

Because every shooter, load, and setup is different, this kit offers maximum flexibility and control:

• 7 lb spring – Ideal for very light target or reduced-power loads

• 9 lb spring – Excellent for soft competition ammunition

• 10 lb spring – Best for mid-range and general-purpose loads

• 11 lb spring – Designed for Major Power Factor and +P ammunition

Therefore, you can quickly adapt your pistol to changing ammo, match conditions, or shooting goals without sacrificing reliability.

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Premium ISMI Manufacturing

Built for Consistency and Long Service Life

ISMI manufactures each recoil spring in the USA using aerospace-grade Chrome Silicon wire. Furthermore, every spring undergoes a precise process that includes heat treating, shot peening, and stress relieving.

Because of this manufacturing process, each spring:

• Maintains consistent tension over time

• Resists fatigue and spring set

• Delivers smooth, repeatable cycling

• Provides a significantly longer service life

Consequently, you benefit from predictable performance and reduced maintenance intervals, even with high round counts.

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Compatibility and Requirements

Designed for Modern Flat Wire Recoil Systems

This tuning kit is compatible with:

• Springfield Armory Prodigy 5.0

• Government-length 5″ 9mm 1911 pistols

• Government-length 5″ 9mm 2011 pistols

However, this kit requires a flat wire recoil system and compatible guide rod. It does not work with standard round-wire recoil systems. Therefore, confirming your recoil setup before installation ensures proper fit and flawless function.

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Ideal Applications

Perfect for Shooters Who Demand Control

This recoil tuning kit performs exceptionally well for:

• Competition shooters

• Ammo-specific recoil tuning

• Light target and reduced-power loads

• Major Power Factor ammunition

• +P defensive loads

• Gunsmith tuning and performance upgrades

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Summary

Total Control Over Recoil and Reliability

In conclusion, the ISMI 9mm Recoil Spring Tuning Kit for Government-length pistols delivers complete control over recoil impulse, slide speed, and long-term reliability. Because it includes four precision-matched flat wire springs, you can confidently tune your Prodigy or 5″ 9mm 1911/2011 for virtually any load.

Ultimately, with American-made ISMI quality and aerospace-grade materials, this kit delivers smoother recoil, faster follow-up shots, and consistent, repeatable performance you can trust.