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This innovative design makes it quick and easy to match your spring weight to your ammo of choice, greatly improving the performance of your pistol. It is so easy springs can be changed out in under 60 seconds!
Three springs are included in the kit, and are color-coded for easy identification:
The standard rate spring is suitable for subsonic, standard and high velocity however you will see your best results using specific spring weights.
Recoil Rod Spring and Assembly Kit for Ruger MKII, MKIII, MK IV, and 22/45