43717 Wolff Glock 17 20 21 22 24 34 Recoil Spring Factory STD

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.