Smith & Wesson Firing Pin Safety Lever Spring Retainer S&W 4003TSW, 4006TSW, 4043TSW, 4046TSW, 4053TSW, 4513TSW, 4553TSW, 4563TSW, 4566TSW, 4583TSW, 4586TSW, CS40C, CS40D, CS40S, CS45C, CS45D, CS45S

Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts. Some parts may require installation by a qualified gunsmith.