ISMI Full Size 13 lb Recoil Spring: Blue

* ISMI recoil springs are manufactured from certified Aerospace specified materials and ISMI employs ISO 9002 quality control standards.
* The springs are wound from flat wire, heat treated, shot peened and stress relieved for maximum durability making them the best direct replacement for Glock factory OEM springs.
* Large frame (17, 22, 31 etc) springs have 36-38 coils depending on the spring.
* Independent tests reveal ISMI recoil springs have endured an excess of 100,000 compression cycles!
* ISMI springs include a 12 month manufactures replacement warranty however we advise you practice routine maintenance and change your recoil spring yearly.
* We recommend Lone Wolf Guide Rods for use with this product:
* Recoil spring buffers are not recommended.
* Buffers reduce slide travel which can have an adverse effect of feeding reliability.
* Buffers can break apart during firing and render the firearm inoperable.