Description Wolff H&K USP 9mm .40 & .45 RECOIL SPRING 12LB HECKLER & KOCH USP Springs are for the H&K USP Series Only. Not for use in HK45 and P30 Series Pistols. Recoil Springs Recoil springs for FULL SIZE MODELS are available with load rated specifications to help tailor the recoil function. Each recoil spring includes an extra power firing pin spring. NOTE: recoil spring replaces outer recoil spring only. Short buffer spring should not be changed. Reduced Power…: 10 Lb. Factory Standard.: 12 Lb. (9mm & .40 S&W) Factory Standard.: 14 Lb. (.45 ACP) Extra Power………: 16, 18 & 20 Lb. Related
