Now you can tune your Glock to the type of rounds you shoot and to your shooting style. These ISMI recoil springs for Glock pistols are wound from flat wire so they are a direct replacement for your factory supplied springs. Manufactured to ISO 9002 quality control standards, ISMI uses aerospace spec materials. Springs are fully processed for maximum durability and consistency. ISMI is known for their ability to maintain proper spring rates for reliability.
Typically a lighter spring is needed when using a compensator or ported barrels. Shooters who have converted down a caliber, i.e. .40 to 9mm with a conversion barrel, may also need to go down a spring weight if they're experiencing failure to feed/eject issues. A heavier spring is needed if you're shooting "stiff" loads. Competition shooters "tune" their springs to the loads they use and to their shooting style to help keep the gun on target during double taps. We offer several different spring weights that will allow you to tune the spring to get the most speed and accuracy.
Recoil springs should be changed after 5,000 rounds.
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