Wolff SPRINGFIELD XD 4IN STD RECOIL SPRING 17LB
Recoil springs are available in load-rated specifications to adjust the recoil function to individual needs. Each load rated recoil spring includes a extra power striker spring.
- Reduced Power…: None available
- Factory Standard.: 17 Lb. (9mm, .40 S&W & .357 Sig)
- Extra Power……..: 19 & 21 Lb