Description WOLFF Hammer Springs (Plastic Base) REDUCES TRIGGER PULL WEIGHT Plastic Hammer Spring Base- For Models P-220 thru P-229. Recently Sig has started using a plastic hammer spring base/retainer with a short hammer spring. This is being phased in across all models. If your pistol has the plastic base/retainer for the hammer spring the following springs are for your pistol. •Reduced Power…: 17, 18, & 19 Lb. •Factory Standard.: 21 Lb This pak contains 1 each of 17, 18 and 19 pound reduced power hammer springs above, allowing adjustment of the firearm to individual requirements. PLASTIC HAMMER SPRING BASE MODELS ONLY.
