Description Recoil 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. Wolff recoil springs are available for the 5″ XD in 9mm, .40 S&W, .357 Sig, and .45ACP. .45ACP uses a different recoil spring than the other three calibers. .45ACP Recoil Spring ratings: Reduced Power…: 14 & 16 Lb. Factory Standard.: 18.5 Lb. Extra Power……..: 20 Lb


