ZEV TECH ISMI RECOIL SPRING, 17 LB
Flat coil, factory style recoil rod spring. 15 lb.
Most commonly used in 9mm, .40 and .357 model Glock's dictated on the Tech Specs page.
Best used for recoil management in most GlockÂ® pistols with standard ammunition.
124gr.- 145gr (9mm) and any extra power ammunition loading.
Great for any .40cal & .357 recoil reduction as well.