Part# 53213 Wolff Gunsprings for S&W M&P Series 90/357/40 RP Recoil Spring 13LB 9mm, .40 S&W, .357 Sig
Recoil Spring 13LB and Firing Pin Spring
For full size model M&P's only. Will not fit Compact 2.0 series. May fit other models with barrels of 5 and 5.25 Inches