Mainspring compatible with a range of Smith & Wesson pistol models including 3953TSW, 4013TSW, 4053TSW, 4513TSW, 3913, 3914, 3914DAO, 3953, 4054, 4516, 4556, 457, 457D, 908, 469, 669, 6904, 6906, 6924, 6926, 6944, and 6946.
Smith and Wesson Factory New Part. Part# 069740000