Replaces the factory spring with (1) non-captive, recoil spring and (1) striker spring to tailor recoil function.

Fits: GLOCK 17,20,21,22,24,34,35

Comes with BONUS Striker Spring

Please 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.