Recoil SpringsRecoil springs are available in load-rated specifications to adjust the recoil function to individual needs. Each load rated recoil spring includes an extra power striker spring. Note: springs will function with factory guide rod or Wolff guide rod. Does appear these will not workj with factory XDM guide rods.
9mm, .40 S&W, .357 Sig recoil spring ratings
Reduced Power...: 9, 10, 11, 12