Part# 47717 Wolff GunSprings for S&W 4516-1/4013, XP RECOIL SPRING 17LB
Recoil Spring and Firing Pin Spring
For Use in:
4013*, 4014*, 4053*, 4054*, .40 S&W
4516, 4516-1, 4536, 4556, 4596, .45 ACP
* Not for Rev. 4, dual recoil spring models.