Smith & Wesson J Frame Mainspring/Hammer Spring All Models — Factory New Part 071040000 .38 special Verify your model and caliber

Verify your model and caliber before ordering

This critical component ensures proper cylinder lockup and reliable operation

Case hardened finish provides exceptional wear resistance and durability

or upgrading your classic

32 H&R Magnum (also fires

Smith & Wesson J Frame Mainspring/Hammer Spring All Models — Factory New Part 071040000 .38 special Verify your model and caliberSmith & Wesson J Frame Mainspring Hammer Spring All Models, Factory New OEM Part Genuine factory new Smith & Wesson OEM mainspring (hammer spring) for all J Frame revolvers. The mainspring is the powerplant of the fire control system it provides the force that drives the hammer forward to strike the firing pin and ignite the primer. A worn or weakened mainspring causes light primer strikes, misfires, and inconsistent ignition. This factory replacement