Description 43717 Wolff Glock 17 20 21 22 24 34 35 Factory Standard Recoil Spring Wolff recoil springs for use in Glock pistols are available with load-rated specifications to tailor the recoil function to individual needs. Due to the design of the Glock pistol, all Glock recoil springs now include a factory strength replacement striker spring. NOTE: Wolff recoil springs for Glock pistols are not captive. We highly recommend using them in conjunction with Wolff guide rods listed below. Note: Not for use in Generation 4 pistols. For Use In: Glock 17, 17L, & 34, 9mm Glock 20, 10mm Glock 21, .45 ACP Glock 22, 24 & 35, .40 S&W Glock 31, .357 Sig Please See Ratings Below •Reduced Power…: 10, 11, 12, 14, 15 & 16 Lb. •Factory Standard.: 17 Lb. •Extra Power………: 19, 20, 22 & 24 Lb. IMPORTANT NOTE: Factory recoil spring ratings above are for current production models with captive factory recoil spring systems which are silver/gray in color. Previous captive factory recoil assemblies for the 17, 17L, 20, 21 & 22 had recoil springs rated at 16 pounds. Earlier non-captive models of the 17, 17L and 19 had factory recoil springs rated at 19 pounds. Not for use in Generation 4 pistols.
