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 Lee Enfield #4 & 5, Mk1 Extractor Spring $14.97 Colt Government 1911 Conventional Recoil Spring 20lb $16.97