Sig Sauer P220 – 29 Hammer Spring 28lb. $9.97 28lb. Extra power replacement hammer spring. Factory standard is 24lb. for reference. 28328 For Use in: P-225, P-226, P-228 & P-229 P-220 with serial number above 219166 Out of stock Categories: Sig Sauer, Wolff Gun Springs Related products Luger 7.65/9mm XP magazines spring 3 pak $34.97 CAR15/M4 5.56/9mm Xtra Power Buffer Spring $24.97