Smith & Wesson M&P 9mm .40/.357 Recoil Spring 12lb. $14.97 12lb. reduced power recoil spring for the M&P 9mm, .40 S&W and .357 Sig. 53212 Out of stock Categories: Smith & Wesson, Wolff Gun Springs Related products AR15/M-16 5.56/.223 Std Power Buffer Spring $24.97 Colt Government 1911 Conventional Recoil Spring 20lb $16.97