Sig Sauer P220 – 29 Hammer Spring 20lb. $9.97 20lb. Factory standard replacement hammer spring. 28320 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 Colt Government Conventional Recoil Spring 12lb. $16.97 Colt Government 1911 Variable Recoil Spring 14lb. $16.97