Smith & Wesson M&P 9mm .40/.357 Recoil Spring 16lb. $14.97 16lb. reduced power recoil spring for the M&P 9mm, .40 S&W and .357 Sig. 53216 Out of stock Categories: Smith & Wesson, Wolff Gun Springs Related products Colt Government 1911 Variable Recoil Spring 18.5lb $16.97