Smith & Wesson Magazine Release Nut S&W 3904, 3914, 3914DAO, 3944, 3954, 4004, 4054, 411, 4505, 4596, 59, 459, 559, 5904, 5924, 5943SSV, 5944, 5967, 915, SUPER9, 6904, 6924, 6944 Blue

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.