Hammer springs are available in a variety of weights to allow adjustment of the trigger and let-off to individual needs. Hammer spring packs offer a savings over individually purchased springs and are recommended when exact poundage desired is unknown. Installation requires disassembly and assembly of firearm.
Features: Spring pack allows custom tuning of pistol
Gunsmithing Required: Replace original spring
Contains 1 each 16, 17, 18, 20, 22, and 23 lb hammer springs
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Wolff Hammer Spring Pack S&W 39, 59, 909, 645, 4566, 1066, 410, 4003, 4044 with Long Hammer Spring