Part# 53211 Wolff GunSprings for S&W M&P Series 90/357/40 RP Recoil Spring 11LB
9mm, .40 S&W, .357 Sig
Recoil Spring 11LB and Firing Pin Spring
**For full size model M&P's only. Will not fit Compact 2.0 (4 inch models). May fit other models with barrels of 5 and 5.25 Inches**