Part# 063780000 Smith & Wesson Pistol Multiple Model Rear Sight Plunger New Part
1006, 3904, 3906, 3944, 3946, 439, 539, 639, 4506, 645, 459, 559, 659, 5903, 5904, 5906
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Features: Smith & Wesson factory part
Gunsmiths Required: Disassembly and Assembly required to replace part
Some parts may require installation and fitting by a qualified gun smith Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts