ISM Full Size 17 lb Recoil Spring

(1 review)

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ISMI recoil springs are manufactured from certified Aerospace specified materials and ISMI employs ISO 9002 quality control standards. The springs are wound from heat treated flat wire, 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:
(1 review) Write a Review
  • 5

    Posted by alejandro pedroza on 22nd May 2024

    As the title states this recoil spring is exactly what I needed for my Frankenstein We have Glock 49 at home build. I needed the recoil spring to use with their guide rod adapter. Worked great and I had zero malfunctions at the range which I'm sure the spring contributed to as a regular glock 17 recoil spring and rod I tired using at first was having many FTE/FTF issues.