Product Summary
The ISMI Trigger Spring is a high-performance replacement part designed for Glock Gen 1, 2, 3, and 4 pistols. Manufactured using certified aerospace-specification chrome silicon, these springs undergo heat treatment, shot peening, and stress relief to ensure maximum durability. The product utilizes advanced manufacturing technology similar to that found in IndyCar and Formula One racing components. This 5 lb spring is an ideal upgrade for shooters looking for reliable, modern spring technology to enhance their pistol’s performance.








